lab 3

Question 1

The change in the concentration of reactant or product with time is used to calculate this.

Answer 1

reaction rate

The reaction rate depends on a variety of factors including temperature and concentrations of reactants.

Question 1

This shows the mathematical relationship between reaction rate and the concentrations of species upon which the rate depends.

Answer 1

rate law (rate equation)

For a generic equation aA + bB cC + dD, the form of the rate law may be rate = k[A]m[B]n.
The exponents m and n are generally 0, 1 or 2. These exponents are experimentally determined.

Question 2

The sum of the exponents in the rate law

Answer 2

reaction order

This indicates the number of molecules or ions involved in the rate-detmining (slow) step of the reaction

Question 3

A substance that increases the rate of a chemical reaction without itself being consumed.

Answer 3

Catalyst

The catalyst increases the rate of reaction by forming a complex with a reactant that is more reactive than the reactant itself.

Question 4

The minimum amount of energy needed to initiate a chemical reaction.

Answer 4

Activation Energy

The activation energy is characteristic of the reaction and does not vary significantly with temperature

Question 5

This shows the dependence of the rate constant of a reaction on temperature.

Answer 5

Arrhenius equation

A, the preexponential factor, is constant

E,a the activation energy, is constant

R is the ideal gas constant

T, is temp in kelvin

Question 6

A proportionality constant between the reaction rate and the concentrations in the rate law.

Answer 6

rate constant, k