Chemical Kinetics

Question 1

Answers how fast a reaction happens without depending on spontaneity

Answer 1

kinetics

Question 1

The rate can be expressed in terms of the change in ___ of any of its components

Answer 1

concentration

Question 2

Elementary reactions are ____ reactions with a single __ __ and no ____. The rate law of an elementary reaction can be derived from the ___ of reactants in the balanced equation

Answer 2

single-step, transition state,, intermediates, coefficients

Question 3

___ do not appear in the rate law. The __ ____, reaction orders must be determined experimentally. A reaction’s overall reaction order is the absolute value of each individual __ ___

Answer 3

products, rate constant, reaction orders

Question 4

Increasing temperature will __ the rate constant and the overall rate of the equation. Decreasing the activation energy by adding a ___, will increase the rate constant and the rate of the reaction. Increasing the concentration of the reactions will produce __ __ on the rate constant, but the rate of the reaction increases if the order of the reaction is greater than ___

Answer 4

increase, catalyst, no change, 0

Question 5

The rate of the reaction does not depend on the concentration of the reactants

Answer 5

zeroth order

Question 6

The rate of the reaction is proportional to the concentration of the reactant

Answer 6

first order

Question 7

The rate of the reaction is proportional to the square of one reactant or two reactants

Answer 7

second order

Question 8

Determines the amount of reactant / product present over a period of time

Answer 8

integrated rate laws

Question 9

Collision theory says that for a chemical reaction to occur, the molecules must ___, the must have the proper ___, and they must have sufficient energy to overcome the __ _____ ___

Answer 9

collide, orientation, activation energy barrier

Question 10

Equation that describes the temperature dependent nature of reaction rates

Answer 10

arrhenius equation

Question 11

The fraction of collisions that have enough energy to overcome the activation energy

Answer 11

frequency factor

Question 12

A low activation energy means an increase in ___ and an increase in rate, while ___ activation energy means a decrease in k and decrease in reaction rate

Answer 12

k, high

Question 13

Activation energy is independent of ___. The only way to change Ea is to add a ___

Answer 13

temperature, catalyst

Question 14

The time it takes for half of the reactant to turn into product

Answer 14

half life

Question 15

For a ___ order reaction the half life is independent of the concentration. In the zeroth order reaction, the half life ____ when the concentration decreases. In the second order reaction the half life ___ as the concentration decreases. _____ decay is a first order reaction

Answer 15

first, decreases, increases, radioactive