Kinetics and Equilibrium

Which of the following factors do not effect the rate of reaction?

• Concentration

• Structure

• Temperature

• Catalyst

How does a catalyst alter the rate of reaction?

• It gives it a bump in energy?

• It allows for faster collisions to occur?

• It increases the temperature of the system?

• It alters the mechanism of the reaction?

Which rate law matches the mechanism below? Which represents a catalyst?

A+ B --> CD (slow)

X + CD --> D + X (fast)

• rate = k[A]^2, catalyst is CD

• rate = k[A], catalyst is X

• rate = k[A][B] = k_-1[CD], no catalyst

• rate = k[A][B], catalyst is X

Which of the following integrated rate laws represents a reaction that was determined to be first order?

• [A] vs time

• 1/[A] vs time

• log[A] vs time

• ln[A] vs time

If a reaction forms an equilibrium, the _____.

• Concentrations of species remain constant

• Concentrations of species are the same.

• Concentrations depend on the rate of reaction.

• Not enough information

The reaction order for a specific reactant was determined to be second order. Which of the following statements best match?

• Concentration doubles, rate quadruples

• Concentration goes down by half, rate doubles

• Concentration doubles, rate doubles

• concentration doubles, rate triples

Which of the following is most correct for the equilibrium shown below?

2Na(s) + CuCl_2(aq) <--> Cu(s) + 2NaCl(aq)

• k = rate/[Na]^2[CuCl_2]

• K = [NaCl]^2/[CuCl_2]

• K = [NaCl]^2[Cu]/[CuCl_2][Na]^2

• K = [CuCl_2]/[NaCl]^2

Using the experimental data, determine the overall order of the reaction.

A + B --> D

• First

• Second

• Third

• Not enough info

For the reaction below, it was determined that the order was second order with a rate constant of .0576 M-1 * s-1.

The initial concentration of the reactant was 0.200 M

CH4(g) --> C(s) + 2H2(g)

Determine the half-life of the reaction.

• 12.0 sec

• 17.4 sec

• 5 sec

• 86.8 sec

If the reaction quotient was larger than the equilibrium constant, what does this mean in relation to the position of the equilibrium?

• The equilibrium will shift towards the products.

• The equilibrium will shift towards the reactants.

• The equilibrium will not shift as it is already at equilibrium.

• Not enough information