# Problem: The reaction between NO and I2 is first order in NO and second order in I2. What change in rate will result when the initial concentrations of both are tripled?A. 27-fold increase B. 6-fold increaseC. 3-fold increaseD. 81-fold increaseE. 18-fold increase

###### FREE Expert Solution

We’re being asked to determine the change in rate when the initial concentrations of both are tripled for the given rate conditions.

Recall that the rate law only focuses on the reactant concentrations and has a general form of:

k = rate constant
A & B = reactants
x & y = reactant orders

We're going to determine the change in rate using the following steps:

Step 1: Write the rate law for the reaction.
Step 2: Determine the change in rate.

87% (417 ratings) ###### Problem Details

The reaction between NO and I2 is first order in NO and second order in I2. What change in rate will result when the initial concentrations of both are tripled?

A. 27-fold increase

B. 6-fold increase

C. 3-fold increase

D. 81-fold increase

E. 18-fold increase