How can you best describe the transfer of heat that occurs when 1.40 mol of #H_2# reacts?

1 Answer
Nov 19, 2016

Answer:

Well, you can start by specifying with what reagent the dihydrogen reacts.

Explanation:

I think (and I acknowledge I might be wrong) that you refer to a combustion reaction:

#H_2(g) + 1/2O_2(g) rarr H_2O(l)+Delta#

Now I know for a fact that #DeltaH^@""_f(H_2O)=-285*kJ*mol^-1#

And thus if #1.4*mol# #"dihydrogen"# react with #0.7*mol# #"dioxygen"# we get out #1.4*molxx(-285)*kJ*mol^-1~=400*kJ#