18 Questions
What is the overall order of the given reaction?
Third order
If the concentration of Y is halved, what effect will it have on the rate of the reaction?
The rate will quadruple
What is the unit of the rate constant k for the reaction in mol-2dm6s-1?
mol-3dm6s-1
What does increasing the temperature do to the rate constant k according to the Arrhenius equation?
Increases it
If the activation energy (EA) for a reaction increases, what would be the effect on the rate constant k?
Decrease
Which equation represents the relationship between ln k, ln A, EA, R, and T according to the Arrhenius equation?
ln k = ln A - EA/RT
What is the overall order of the reaction described in the text?
3rd order
If both [A] and [B] concentrations are doubled simultaneously in a reaction with rate equation r = k [A] [B]^2, how does the rate change?
It increases 18 times
Given the initial rate data in the table, what is the order with respect to reactant X?
1st order
If the concentration of reactant Y is tripled while the concentration of X remains constant, what would be the impact on the rate in the reaction described?
The rate would increase by a factor of 9
What is the unit of the rate constant in the reaction described?
mol-2dm6s-1
If both reactant concentrations are changed simultaneously, how does the effect on rate change compared to changing just one reactant's concentration at a time?
The effect on rate is multiplied together
In a first-order reaction, what is the relationship between the rate constant (k) and concentration?
k is independent of concentration
What order is a reaction if the half-lives of the reaction rapidly increase as the reaction progresses?
Second order
How do you determine the overall order of a reaction from initial rate data?
By calculating the sum of exponents in the rate equation
What happens to the rate in a zero-order reaction as the reactant is used up?
The rate remains constant
What is the unit of rate constant (k) for a first-order reaction?
$s^{-1}$
How does the half-life of a first-order reaction change with concentration?
It remains constant with concentration
Test your understanding of determining rate laws and rate constants in chemical kinetics. This quiz covers identifying the order of reactants, calculating rate expressions, and solving for rate constants using initial rate data.
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