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:

rate law=kAxBy

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)
View Complete Written Solution
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

Frequently Asked Questions

What scientific concept do you need to know in order to solve this problem?

Our tutors have indicated that to solve this problem you will need to apply the Rate Law concept. You can view video lessons to learn Rate Law. Or if you need more Rate Law practice, you can also practice Rate Law practice problems.

What professor is this problem relevant for?

Based on our data, we think this problem is relevant for Professor Dixon's class at UCF.