Acids Bases Salts |

Acids Bases Salts

admin October 2, 2015 Online Chemistry Quizzes 0
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				Which statement describes a property of a solution of hydrogen chloride in methylbenzene?
				
							
									

						
						
						
						
						
															It reacts with magnesium to give hydrogen.													
					
									

						
						
						
						
						
															It has a pH of between 1 and 2.													
					
									

						
						
						
						
						
															It is only partly dissociated into ions.													
					
									

						
						
						
						
						
															It does not conduct electricity.													
					
				
				

				
					Correct!
					Wrong!
					
				

			

					
			
				The pH values of five aqueous solutions P, Q, R, S and T, of equal concentrations, are shown in the diagram. What could the aqueous solutions be?
				
									
						
											
							
									

						
						
						
						
						
															Q S T R P													
					
									

						
						
						
						
						
															R P Q S T													
					
									

						
						
						
						
						
															R T S Q P													
					
									

						
						
						
						
						
															S Q P R T													
					
				
				

				
					Correct!
					Wrong!
					
				

			

					
			
				Five students each dissolved an indigestion tablet in 100 cm3 of water. They then titrated25.0 cm3 of their solutions with dilute hydrochloric acid, using the same indicator. The results are shown in the table below. Which statement could explain the result obtained by student 5?
				
									
						
											
							
									

						
						
						
						
						
															The burette was washed out with hydrochloric acid.													
					
									

						
						
						
						
						
															The pipette was washed out with the tablet solution.													
					
									

						
						
						
						
						
															The student measured to the top of the meniscus in the pipette.													
					
									

						
						
						
						
						
															The titration flask was washed out with the tablet solution.													
					
				
				

				
					Correct!
					Wrong!
					
				

			

					
			
				When hydrochloric acid is added to substance X, effervescence is observed but the reaction stops suddenly after only a small volume of gas has been given off. What is substance X?
				
							
									

						
						
						
						
						
															calcium carbonate													
					
									

						
						
						
						
						
															lead(II) carbonate													
					
									

						
						
						
						
						
															barium carbonate													
					
									

						
						
						
						
						
															copper(II) carbonate													
					
				
				

				
					Correct!
					Wrong!
					
				

			

					
			
				Which of the following equations suggests that the underlined oxide has amphoteric properties?
				
							
									

						
						
						
						
						
															Li2O + H2O > 2LiOH													
					
									

						
						
						
						
						
															Ga2O3 + 2NaOH > 2NaGaO2 + H2O													
					
									

						
						
						
						
						
															CuO + 2HCl > CuCl2 + H2O													
					
									

						
						
						
						
						
															Cl2O + 2NaOH > 2NaClO + H2O													
					
				
				

				
					Correct!
					Wrong!
					
				

			

					
			
				The table gives the information about the solubility of hydroxides, carbonates and sulfates of calcium, sodium and zinc. What is the best way of making zinc carbonate?
				
									
						
											
							
									

						
						
						
						
						
															Shake solid zinc hydroxide with aqueous sodium hydroxide and pass in carbon dioxide into the mixture.													
					
									

						
						
						
						
						
															Shake aqueous zinc sulfate with aqueous calcium hydroxide and pass in carbon dioxide into the mixture.													
					
									

						
						
						
						
						
															Shake solid zinc sulfate with solid calcium carbonate and water.													
					
									

						
						
						
						
						
															Shake solid zinc sulfate with water and add aqueous sodium carbonate.													
					
				
				

				
					Correct!
					Wrong!
					
				

			

					
			
				The oxides of the elements sodium to chlorine are separately added to water. Which one of the following diagrams best represents the pH of the solutions produced?
				
									
						
											
							
									

						
						
						
						
						
															A													
					
									

						
						
						
						
						
															B													
					
									

						
						
						
						
						
															C													
					
									

						
						
						
						
						
															D													
					
				
				

				
					Correct!
					Wrong!
					
				

			

					
			
				Which one of the following is the best method of preparing lead(II) sulfate, starting from lead(II) carbonate?
				
							
									

						
						
						
						
						
															Dissolve the lead(II) carbonate in dilute nitric acid and add a solution of sodium sulfate.													
					
									

						
						
						
						
						
															Dissolve the lead(II) carbonate in water and add a solution of sodium sulfate.													
					
									

						
						
						
						
						
															Heat the lead(II) carbonate and dissolve the lead(II) oxide formed in dilute sulfuric acid.													
					
									

						
						
						
						
						
															Heat the lead(II) carbonate, dissolve the lead(II) oxide formed in dilute nitric acid, then add dilute sulfuric acid.													
					
				
				

				
					Correct!
					Wrong!
					
				

			

					
			
				Which chloride could not be safely produced by reacting a metal with dilute hydrochloric acid?
				
							
									

						
						
						
						
						
															Iron(II) chloride													
					
									

						
						
						
						
						
															Magnesium chloride													
					
									

						
						
						
						
						
															Potassium chloride													
					
									

						
						
						
						
						
															Zinc chloride													
					
				
				

				
					Correct!
					Wrong!
					
				

			

					
			
				An aqueous solution of a chloride is made from a solid hydroxide, of a metal N, by the reaction:
				
									
						
											
							
									

						
						
						
						
						
															Barium hydroxide													
					
									

						
						
						
						
						
															Calcium hydroxide													
					
									

						
						
						
						
						
															Lead(II) hydroxide													
					
									

						
						
						
						
						
															Magnesium hydroxide													
					
				
				

				
					Correct!
					Wrong!
					
				

			

					
			
				Which of the following substances when added to dilute ethanoic acid will decrease the pH value of the acid?
				
							
									

						
						
						
						
						
															Hydrogen chloride													
					
									

						
						
						
						
						
															Water													
					
									

						
						
						
						
						
															Sodium carbonate													
					
									

						
						
						
						
						
															Magnesium oxide													
					
				
				

				
					Correct!
					Wrong!
					
				

			

					
			
				Which of the following is not used to prepare magnesium sulfate by reaction with dilute sulfuric acid?
				
							
									

						
						
						
						
						
															Magnesium													
					
									

						
						
						
						
						
															Magnesium carbonate													
					
									

						
						
						
						
						
															Magnesium nitrate													
					
									

						
						
						
						
						
															Magnesium oxide													
					
				
				

				
					Correct!
					Wrong!
					
				

			

					
			
				The word equation shows a chemical reaction.
				
							
									

						
						
						
						
						
															Copper(II) oxide													
					
									

						
						
						
						
						
															Magnesium													
					
									

						
						
						
						
						
															Sodium carbonate													
					
									

						
						
						
						
						
															Sodium hydroxide													
					
				
				

				
					Correct!
					Wrong!
					
				

			

					
			
				Each of the four bottles contains one solution.
				
									
						
											
							
									

						
						
						
						
						
															A													
					
									

						
						
						
						
						
															B													
					
									

						
						
						
						
						
															C													
					
									

						
						
						
						
						
															D													
					
				
				

				
					Correct!
					Wrong!
					
				

			

					
			
				An aqueous solution contains barium iodide. Victor wants to remove all the barium ions. What should be added to the solution?
				
							
									

						
						
						
						
						
															Aqueous chlorine													
					
									

						
						
						
						
						
															Sulfuric acid													
					
									

						
						
						
						
						
															Acidified lead(II) nitrate													
					
									

						
						
						
						
						
															Hydrochloric acid													
					
				
				

				
					Correct!
					Wrong!
					
				

			

					
			
				In an experiment, 10cm3 of 1.0 mol/dm3 aqueous potassium hydroxide is added to 5 cm3of 1.0 mol/dm3 hydrochloric acid. Which change, if any, would be observed in thecolour of Universal Indicator?
				
									
						
											
							
									

						
						
						
						
						
															Remains red													
					
									

						
						
						
						
						
															Red to blue													
					
									

						
						
						
						
						
															Red to green													
					
									

						
						
						
						
						
															Red to green to blue													
					
				
				

				
					Correct!
					Wrong!
					
				

			

					
			
				Which of the following procedures give the best yield of calcium sulfate?
				
							
									

						
						
						
						
						
															Add dilute nitric acid to calcium carbonate, followed by dilute sulfuric acid.													
					
									

						
						
						
						
						
															Mix solid calcium nitrate and solid potassium sulfate.													
					
									

						
						
						
						
						
															Add excess dilute sulfuric acid to calcium carbonate.													
					
									

						
						
						
						
						
															Titrate calcium hydroxide with dilute sulfuric acid.													
					
				
				

				
					Correct!
					Wrong!
					
				

			

					
			
				Substance R was added bit by bit, with stirring, to aqueous solution S. The changes in pH of the mixture are shown in the graph below. What could S and R be?
				
									
						
											
							
									

						
						
						
						
						
															A													
					
									

						
						
						
						
						
															B													
					
									

						
						
						
						
						
															C													
					
									

						
						
						
						
						
															D													
					
				
				

				
					Correct!
					Wrong!
					
				

			

					
			
				A solution of unknown pH was tested with three indicators. Phenolphthalein remained colourless, bromothymol blue turned yellow and bromophenol blue turned indigo. What is the likely pH of the solution?
				
									
						
											
							
									

						
						
						
						
						
															Between 1 and 4													
					
									

						
						
						
						
						
															Between 4 and 6													
					
									

						
						
						
						
						
															Between 4 and 8													
					
									

						
						
						
						
						
															Between 6 and 8													
					
				
				

				
					Correct!
					Wrong!
					
				

			

					
			
				The following substances were added to a 500 cm3 solution of 0.1 mol/dm3 hydrochloric acid in a beaker containing some bromothymol blue indicator.
				
									
						
											
							
									

						
						
						
						
						
															A													
					
									

						
						
						
						
						
															B													
					
									

						
						
						
						
						
															C													
					
									

						
						
						
						
						
															D													
					
				
				

				
					Correct!
					Wrong!
					
				

			

					
			
				An aqueous solution of a sulfate is made from a solid hydroxide, of a metal X, by the reaction:
				
							
									

						
						
						
						
						
															Calcium hydroxide													
					
									

						
						
						
						
						
															Calcium hydroxide													
					
									

						
						
						
						
						
															Magnesium hydroxide													
					
									

						
						
						
						
						
															Zinc hydroxide													
					
				
				

				
					Correct!
					Wrong!
					
				

			

					
			
				A beaker contained 10 cm3 of 0.100 mol/dm3 hydrochloric acid and a few drops of two different indicators, bromocresol green and phenolphthalein. The table below shows the pH range and colours of the indicators. What was the colour of the initial solution?
				
									
						
											
							
									

						
						
						
						
						
															Yellow													
					
									

						
						
						
						
						
															Blue													
					
									

						
						
						
						
						
															Purple													
					
									

						
						
						
						
						
															Insufficient information is provided to determine the colour													
					
				
				

				
					Correct!
					Wrong!
					
				

			

					
			
				To the beaker, 5 cm3 of 0.300 mol/dm3 sodium hydroxide was added. What will be the colour of the final solution?
				
									
						
											
							
									

						
						
						
						
						
															Yellow													
					
									

						
						
						
						
						
															Blue													
					
									

						
						
						
						
						
															Purple													
					
									

						
						
						
						
						
															Insufficient information is provided to determine the colour													
					
				
				

				
					Correct!
					Wrong!
					
				

			

					
			
				The chewing gum, 
				
							
									

						
						
						
						
						
															The mouth provides an environment that has a temperature greater than25													
					
									

						
						
						
						
						
															There is sufficient moisture in the mouth for the acids to dissociate and react.													
					
									

						
						
						
						
						
															The enzyme present in saliva can break down the sugars found in the gum.													
					
									

						
						
						
						
						
															The gum wrapper protected the gum from reacting with the surrounding environment.													
					
				
				

				
					Correct!
					Wrong!
					
				

			

					
			
				A student set up a circuit as shown below, and found that the light bulb was brightly lit when the electrode
				
							
									

						
						
						
						
						
															Copper (II) chloride													
					
									

						
						
						
						
						
															Sodium hydroxide													
					
									

						
						
						
						
						
															Barium hydroxide													
					
									

						
						
						
						
						
															Sodium nitrate													
					
				
				

				
					Correct!
					Wrong!
					
				

			

					
			
				Which of the following chemical equations suggests that the underlined oxide is amphoteric?
				
							
									

						
						
						
						
						
															Rb2O+H2O > 2RbOH													
					
									

						
						
						
						
						
															SO2 + 2KOH > K2SO3 + H2O													
					
									

						
						
						
						
						
															In2O3 + 2KOH > 2KInO2 + H2O													
					
									

						
						
						
						
						
															MgO + 2HCl > MgCl2 + H2O													
					
				
				

				
					Correct!
					Wrong!
					
				

			

					
			
				The diagrams show three experiments using dilute sulfuric acid. Three different powders are added to the acid. The mixtures are stirred. Which test tubes now contain Cu2+(aq) ions?
				
									
						
											
							
									

						
						
						
						
						
															3 only													
					
									

						
						
						
						
						
															l and 2 only													
					
									

						
						
						
						
						
															2 and 3 only													
					
									

						
						
						
						
						
															1, 2 and 3													
					
				
				

				
					Correct!
					Wrong!
					
				

			

					
			
				Air containing an acidic impurity was neutralised by passing it through a column containing substance X. What is substance X?
				
									
						
											
							
									

						
						
						
						
						
															Calcium oxide													
					
									

						
						
						
						
						
															Sand													
					
									

						
						
						
						
						
															Sodium chloride													
					
									

						
						
						
						
						
															Concentrated sulfuric acid													
					
				
				

				
					Correct!
					Wrong!
					
				

			

					
			
				Which of the following reaction produces the highest number of water molecules?
				
							
									

						
						
						
						
						
															Calcium carbonate and hydrochloric acid													
					
									

						
						
						
						
						
															Magnesium and sodium carbonate													
					
									

						
						
						
						
						
															Sulfuric acid and sodium hydroxide													
					
									

						
						
						
						
						
															Ethanol and ethanoic acid													
					
				
				

				
					Correct!
					Wrong!
					
				

			

					
			
				Phosphoric acid is a weak acid. How many moles of hydrogen ions will be produced when one molecule of phosphoric acid and one molecule of hydrochloric acid are dissolved in a beaker of water?
				
							
									

						
						
						
						
						
															Exactly 4 moles of H+ ions													
					
									

						
						
						
						
						
															Less than 4 moles of H+ ions													
					
									

						
						
						
						
						
															More than 4 moles of H+ ions													
					
									

						
						
						
						
						
															Exactly 3 moles of H+ ions													
					
				
				

				
					Correct!
					Wrong!
					
				

			

					
			
				What is the concentration of sulfate ions in 0.01 mol/dm cubic sulfuric acid?
				
							
									

						
						
						
						
						
															0.02 mol/dm cubic													
					
									

						
						
						
						
						
															0.48 g/dm cubic													
					
									

						
						
						
						
						
															0.96 g/dm cubic													
					
									

						
						
						
						
						
															1.00 g/dm cubic													
					
				
				

				
					Correct!
					Wrong!
					
				

			

					
			
				Which compound will eliminate acid in the soil but will not react with ammonium fertilisers?
				
							
									

						
						
						
						
						
															Calcium carbonate													
					
									

						
						
						
						
						
															Calcium hydroxide													
					
									

						
						
						
						
						
															Calcium nitrate													
					
									

						
						
						
						
						
															Calcium oxide													
					
				
				

				
					Correct!
					Wrong!
					
				

			

					
			
				Which of the following does not react with aqueous sodium hydroxide?
				
							
									

						
						
						
						
						
															Zinc oxide													
					
									

						
						
						
						
						
															Carbon dioxide													
					
									

						
						
						
						
						
															Nitrogen dioxide													
					
									

						
						
						
						
						
															Copper(II) oxide													
					
				
				

				
					Correct!
					Wrong!
					
				

			

					
			
				Sodium hydroxide is a stronger alkali compared to aqueous ammoniabecause
				
							
									

						
						
						
						
						
															Sodium hydroxide has a lower pH.													
					
									

						
						
						
						
						
															Sodium hydroxide is more soluble in water.													
					
									

						
						
						
						
						
															Sodium hydroxide ionises completely in water.													
					
									

						
						
						
						
						
															Sodium hydroxide has stronger forces of attraction than aqueous ammonia.													
					
				
				

				
					Correct!
					Wrong!
					
				

			

					
			
				An aqueous solution has a pH value of 14. What information does itimply about the ions present in the solution?
				
									
						
											
							
									

						
						
						
						
						
															A													
					
									

						
						
						
						
						
															B													
					
									

						
						
						
						
						
															C													
					
									

						
						
						
						
						
															D													
					
				
				

				
					Correct!
					Wrong!
					
				

			

						
 

	
	

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