Use standard enthalpies of formation to determine ΔHorxnfor:

3NO2(g) + H2O(l) → 2HNO3(aq) + NO(g)

-133.5 = Delta H

Find the change in internal energy for this reactioion.. ???? In KJ

1 answer

dHrxn = (n*dHreactants) - (n*dHproducts)

dE = dH + work
work is pdV but I don't see any pressure. dV you can get from 3 mols on the left going to 1 mol on the right.