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Shawn J asked:


Assuming the gases are ideal, consider the
work done on the system in each of the fol-
lowing reactions:

a) The conversion of one mole of brown nitrogen dioxide into colorless dinitrogen tetroxide at 30.0±C:

2NO2(g) – N2O4(g)

b) The decomposition of one mole of an air pollutant, nitric oxide, at 300±C:
2 NO(g) – N2(g) + O2(g)

Calculate the work done on (a) followed by
the work done on (b).

1. +1.26 kJ; 0
2. +25.3 kJ; 0
3. -1.26 kJ; 0
4. -1.26 kJ; -1.26 kJ

I know that b is 0 but Im focused about a. Please help please explain!

Paraslim