Practice General Form (4.3.1) - Chapter 4: Chemical Kinetics - ICSE 12 Chemistry

Practice: General Form

Lesson 4.3.1Chemical Kinetics

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8 questions

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6 sample questions

Question 1.
What does the rate constant 'k' represent in the rate law equation?
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Think about what affects the speed of a reaction.
Question 2.
How is the overall order of a reaction determined from the rate law?
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Look at the powers of the concentrations in the equation.
3Question 3.
What is the correct expression for the rate of reaction in a second-order reaction involving reactants A and B?
- Rate = k[A][B]
- Rate = k[A]^2
- Rate = k[A][B]^2
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Consider how the concentration influences the rate based on the order.
4Question 4.
True or False: The order of a reaction must equal the stoichiometric coefficients of the balanced equation.
- True
- False
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Think about empirical observations.
Question 5.
You conduct an experiment with a reaction whose rate law is Rate = k[A]^2[B]. If [A] is tripled and [B] is doubled, calculate the factor by which the rate increases.
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Break down the problem into parts to analyze the effect of each reactant.
Question 6.
Analyze the reaction 3A + 2B → products, which has a rate law of Rate = k[A]^2[B]. If experimental data show that halving [A] decreases the rate to one-fourth, explain how this aligns with the order of the reaction.
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Use the concept of order to analyze how changing concentrations relates to rate.

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