I have given this problem:(adsbygoogle = window.adsbygoogle || []).push({});

The reaction:

A--> Products

Follows the Rate Law, Rate = k[A]^2. When the initial concentration of A is 2.00M, it takes 1 hour for 60% of A to react at 25 celsius. What is the value of the rate constant k at this temp?

-I try to sub 2.00 into A, and (2.00 * .6)/3600 (in seconds) for rate, but I always get a different answer

-the answer is suppose to be 2.1*10^-4 M^-1 s^-1

Many thanks!

**Physics Forums | Science Articles, Homework Help, Discussion**

Join Physics Forums Today!

The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

# Homework Help: Rate Law problems

**Physics Forums | Science Articles, Homework Help, Discussion**