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Topic: Second Order Reaction, Half life  (Read 6909 times)

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Offline Oblivion77

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Second Order Reaction, Half life
« on: October 16, 2008, 11:28:37 PM »
I am stuck on this question, thanks for any help.

For the second-order reaction, 2NOCl(g) → 2NO(g) + Cl2(g)
the half-life is 5.82 hours when [NOCl] = 4.46 M and at 25C. How long will it take for the reaction to be 75.0 % complete from the start ?
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Offline sjb

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Re: Second Order Reaction, Half life
« Reply #1 on: October 18, 2008, 04:14:23 AM »
What is the equation for the half life of a second order reaction?

http://en.wikipedia.org/w/index.php?title=Rate_equation&oldid=240727453
« Last Edit: October 18, 2008, 07:38:35 AM by Borek »
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Offline Oblivion77

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Re: Second Order Reaction, Half life
« Reply #2 on: October 18, 2008, 05:19:57 PM »
I know the equations, I don't know how to solve it.
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Offline sjb

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Re: Second Order Reaction, Half life
« Reply #3 on: October 21, 2008, 03:26:12 AM »
If the reaction is 75% complete, how much starting material do you have?
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