Kinetics Rate Problem

[suhshi]

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http://img40.imageshack.us/img40/9012/ochem1.png


Kinetics Problem

Answer is 0

Does anybody have a fast way of solving this

 

[UCB05]

http://img40.imageshack.us/img40/9012/ochem1.png


Kinetics Problem

Answer is 0

Does anybody have a fast way of solving this

1>2: double b, quadruple rate
2>3: double a and b, quadruple rate

So doubling a has no effect on rate beyond the effect due to b. answer is 0