(Chapter 6 rates of reactions)
Which of the following changes will definitely lead to a faster reaction rate?
VCE Chemistry Unit 3 Area of Study 2
Quiz
•
Chemistry
•
12th Grade
•
Hard
Sajini De Alwis
Used 3+ times
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20 questions
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1.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
(Chapter 6 rates of reactions)
Which of the following changes will definitely lead to a faster reaction rate?
lower temperature, addition of a catalyst and higher concentrations
higher temperature, lower concentrations and the addition of a catalyst
greater surface area, higher temperatures and higher concentrations
greater surface area, lower temperatures and lower concentrations
2.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
(Chapter 6 rates of reactions)
A series of reactions are conducted to compare the reaction rates between calcium carbonate and hydrochloric acid. The time taken for each reaction to produce 80 mL of gas is recorded.
Which of the following is unlikely to be a useful method for monitoring the rate of this reaction?
Monitoring the colour change occurring during the reaction.
Measuring the volume of gas evolved.
Monitoring the mass of the flask.
Monitoring the pH of the solution.
3.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
(Chapter 6 rates of reactions)
A series of reactions are conducted to compare the reaction rates between calcium carbonate and hydrochloric acid. The time taken for each reaction to produce 80 mL of gas is recorded.
In a comparison of experiment 2 and experiment 3, it is likely that
the temperature in experiment 3 was higher than that of experiment 2.
the calcium carbonate particle size in experiment 3 is larger than experiment 2
the rate of reaction in experiment 3 was greater due to the increased calcium carbonate mass.
the rate of reaction in both reactions should have been the same as the HCl concentration was the same
4.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
(Chapter 7 Extent of reactions)
The equilibrium expression shown refers to which equation?
5.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
(Chapter 7 Extent of reactions)
The reaction between sulfur dioxide and oxygen is
The numerical value of K for this reaction at 100°C is 12.4
The concentrations in a mixture of the above gases at 100°C, are
[SO2] = 0.4M [O2] = 0.4M [SO3] = 0.4M
This reaction mixture is at equilibrium.
The forward reaction needs to occur more than the back reaction to reach equilibrium.
The back reaction needs to occur more than the forward reaction to reach equilibrium.
The back reaction will stop until equilibrium is reached.
6.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
(Chapter 7 Extent of reactions)
The reaction between sulfur dioxide and oxygen is
The numerical value of K for this reaction at 100°C is 12.4
4.8 mole of SO2 and 3.0 mole of O2 is introduced to an empty reactor. When equilibrium is reached
4.8 mole of SO3 will have formed
6.0 mole of SO3 will have formed.
SO2 will not be present as it is the scarce reagent.
The amount of SO3 formed will equal the amount of SO2 reacted.
7.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
(Chapter 7 Extent of reactions)
The reaction between sulfur dioxide and oxygen is
The numerical value of K for this reaction at 100°C is 12.4
The correct unit for the equilibrium constant in this reaction will be
M-1
M1
M2
no unit at all since the number of product molecules will equal the reactant molecules.
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