Kinetics Review - Jessica Uzor

What is the equation for an instantaneous rate of a reaction?

• Rate=-ΔReactant/t

• Rate=-d[R]/dt

• Rate=k[A]^n[B]^m

• Rate=Δ[Products]/t

In general terms, equilibrium is defined as the point at which the rate of the reaction is ________ is similar to the reaction __________ and the concentrations _____________.

• going backwards, remaining constant, going forwards

• going backwards, going forwards, remaining constant

• remaining constant, going backwards, going forwards

• going forwards, going backwards, remaining constant

Which of the following is true regarding increasing the rate of the reaction?

• a catalyst

• increase in temperature

• increase in pressure

• All of the above

What is the overall reaction order for the rate R = k[A]^2[B] ?

• 3

• 1

• 2

• 0

The rate for the reaction {NO2 + F2 → NO2F + F} is rate = k[NO2][F2]2 . What is the order of the reaction relative to each reactants, and what is the overall reaction order?

• NO2 = 0, F2 = 2, Overall = 2

• NO2 = 1, F2 = 2, Overall = 3

• NO2 = 0, F2 = 1, Overall = 1

• NO2 = 1, F2 = 2, Overall = 2

If you have a second-order reaction and you double the concentration, what happens to the rate?

• nothing.

• it doubles

• it quadruples

• it disappears

If the overall reaction order is 0, what is the units for k?

• M/s

• M^-1*s^-1

• s^-1 (per seconds)

• all of the above

Where do the exponents come from in the following rate? (Rate = k[A]^n[B]^m), how are the exponents determined?

• balanced chemical equation

• subscripts

• an educated guess

• experimentation

Define the overall reaction order.

• Sum of the orders for each product

• Total orders for the reactants and products

• The largest order for reactants

• Sum of the orders for every reactant

A half-life can be described as which of the following?

• Time needed for the concentration of a substance to increase by half

• Time needed for the concentration of a substance to decrease by half

• Time needed for the concentration to multiply by half

• None of the above