Reaction Order Worksheet
A Grade 9 Science worksheet covering the fundamentals of reaction order, rate laws, and factors affecting reaction rates.
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Reaction Order Worksheet
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Date:
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Read each question carefully and answer to the best of your ability. Show all your work for calculations.
1. What does the 'order' of a reaction refer to?
The number of steps in the reaction mechanism.
The stoichiometric coefficients of the reactants.
The exponent to which the reactant's concentration is raised in the rate law.
The overall energy change of the reaction.
2. For a reaction where Rate = k[A]²[B], what is the overall reaction order?
First order
Second order
Third order
Fourth order
3. The describes how the rate of a reaction depends on the concentration of reactants.
4. A reaction whose rate is independent of the concentration of reactants is a order reaction.
5. The order of a reaction can always be determined from the stoichiometric coefficients of the balanced chemical equation.
True
False
6. Increasing the concentration of a reactant in a first-order reaction will directly increase the reaction rate.
True
False
7. Explain the difference between elementary reactions and overall reactions in terms of reaction order.
8. How is the rate constant (k) affected by temperature? What theory explains this relationship?
Consider the following experimental data for the reaction: A + B → Products
Experiment
[A] (M)
Initial Rate (M/s)
1
0.10
0.005
2
0.20
0.010
3
0.30
0.015
9. Determine the order of the reaction with respect to A.
10. Write the rate law for this reaction.
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