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July 26, 2014

Homework Help: Chemistry(Please help)

Posted by Hannah on Tuesday, April 24, 2012 at 11:35am.

1) Nitrosyl chloride (NOCl) decomposes at high temperature. The equation is

2 NOCl (g) -> 2 NO (g) + Cl2 (g) at 227oC

Using delta Ho = 81.2 kJ and delta So = 128 J/K, calculate the value of the equilibrium constant for this reaction.


I do not know how to start this problem or what formula I should use.



Chemistry(Please help) - DrBob222, Monday, April 23, 2012 at 7:50pm
dGo = dHo - TdSo
Then dGo = -RTlnK




So for delta G= delta H - T delta S it would be delta G= 81200 J/K - 500K(128J/k)

This would equal 17200. Did I do this correctly so far before I move on?

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