Homework Help: chemistry

Posted by court on Monday, March 26, 2012 at 1:41am.

In the presence of a tungsten catalyst at high temperature, the decomposition of ammonia to nitrogen and hydrogen is a zero order process. If the rate constant at a particular temperature us 3.7x10^-6 mol. How long will it take for an ammonia concentration to drop from an initial concentration of 5 .0 x10^-4 M to 5.0x10^-5 M? What is the half life of the reaction under these conditions?

chemistry - DrBob222, Monday, March 26, 2012 at 1:02pm
Write and balance the equation.
[A] = [Ao]-akt
[Ao] is the beginning cncn.
k is given
t is time.
a is the coefficient in the balanced equation.
t_1/2 = [Ao]/2ak

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