Rate constant in second order reaction

[LVAI]

How do you solve for the rate constant in second order reaction? With the formula rate constant is equal to the rate over concentration. I read that the rate constant differs but in a first order reaction the rate constant is the same/ constant in every experiment but in asecond order, it changes. 

Edited October 20, 2018 by LVAI
Wrong spelling

[studiot]

There are two forms of second order reaction, and not suprisingly two forms of solution.

These arise because a second order reaction may come from two like molecules reacting

A + A = products

or two unlike molecules

A + B = products

 

Look at the bottom two entries in the table.