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Posted by on Thursday, April 18, 2013 at 11:02am.

Nitrogen dioxide, a pollutant in the atmosphere, can combine with water to from nitric acid. One of the possible reactions is shown below. Calculate ∆G0 and Kp for this reaction at 25oC and comment of on the spontaneity of the reaction (MUST plot the data and find enthalpy and entropy changes and then calculate free energy change):
3NO2(g) + H2O(l)2HNO3(aq) + NO(g). Temperature
150 K Kp 1.4x10-6
175 K Kp 4.6x10-4
200 K Kp 3.6x10-2
225 K Kp 1.1
250 K Kp 15.5

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