Homework Help: Chemistry

Posted by SANDY on Thursday, March 29, 2012 at 4:40pm.

Nitrogen Dioxide , a pollutant in the atmosphere, can combine with water to form nitric acid. One of the possible reactions is shown here. Calculate delta ∆G° and Kp for this reaction at 25°C and comment on the spontaneity of the reaction. 3NO2(g)+H2O(l)--> 2 HNO3(aq)+ NO (g).
Temp Kp
170 K 3.8x 10^-3
180 K 0.34
190 K 18.4
200 K 681

Chemistry - DrBob222, Thursday, March 29, 2012 at 4:53pm
dGorxn = (n*dGo products) - (dGo products)
dGo = -RT*lnK
Solve for K @ 298 and comment on spontaneity.

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