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Title: The following reaction in automobile exhaust pipes produces nitrogen dioxide, an irritating gas that helps pro? Post by: firework6 on Feb 16, 2012 The following reaction in automobile exhaust pipes produces nitrogen dioxide, an irritating gas that helps produce "smog":
NO(g) + ½O2(g) ? NO2(g) : ?H° = -56.6 kJ Predict ?H° for the following reaction: ½NO(g) + ¼O2(g) ? ½NO2(g) : ?H° = _____ kJ Title: The following reaction in automobile exhaust pipes produces nitrogen dioxide, an irritating gas that helps pro? Post by: oapplesauce on Feb 16, 2012 The coefficients in the second reaction are each half of the coefficients in the first reaction. Thus ?H° is half as well, so ?H° = -28.3 kJ.
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