The Rate Law Question Preview (ID: 55783)


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If the reaction is of the first order, doubling the reactant concentration will
a) nullify the reacton rate
b) double the reaction rate
c) half the reaction rate
d) tends to zero

Substances which undergo chemical reactions are called
a) Reactants
b) Products
c) Both of these
d) None of the above

For third-order reactions, the overall rate increases by eight times when the reactant concentration is
a) halved
b) doubled
c) remains constant
d) Negative

The rate law is also known as the
a) rate theorem
b) rate constant
c) rate equation
d) chemical kinematics

The rate law for a reaction is kAB^2. Which one of the following statements is false?
a) The reaction is first order in A.
b) The reaction is second order in B.
c) The reaction is second-order overall
d) k is the reaction rate constant

As the temperature of a reaction is increased, the rate of the reaction increases because the __________.
a) Reactant molecules collide less frequently
b) Reactant molecules collide more frequently and with greater energy per collision
c) Activation energy is lowered
d) Reactant molecules collide less frequently and with greater energy per collision

A reaction was found to be zero order in A. Increasing the concentration of A by a factor of 3 will cause the reaction rate to _____.
a) Remain constant
b) Increase by a factor of 27
c) Increase by a factor of 9
d) Triple

The minimum amount of energy needed to start a reaction is called the
a) Activation energy
b) Energy of reaction
c) Entropy of reaction
d) Reaction mechanism energy

For a reaction 2A + B 2C, with the rate equation: Rate = kA^2B
a) the order with respect to A is 1 and the order overall is 1.
b) the order with respect to A is 2 and the order overall is 2.
c) the order with respect to A is 2 and the order overall is 3.
d) the order with respect to B is 2 and the order overall is 3.

Particles absorb more energy with the increase in the intensity of light thereby the rate of reaction
a) Increases
b) Decreases
c) Reduces to zero
d) Remains zero

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