# Part A The rate constant for a certain reaction is k = #7.00xx10^-3# #s^-1#. If the initial reactant concentration was 0.600 M, what will the concentration be after 19.0 minutes?

##### 1 Answer

Jul 15, 2016

#### Answer:

#### Explanation:

The units for

So we get:

Integrating gives:

Putting in the numbers:

From which:

This is 1st order exponential decay. The concentration / time graph looks like this:

You will notice that the time taken for

This is a feature of 1st order processes.