Asked by Keith

Gasohol contains ethanol (C2H4OH)(l), which when burned reacts with oxygen to produce CO2(g) and H2O(g). How much heat is released when 12.5g of ethanol burns?

C2H5OH(l) + 3 O2(g) --> 2 CO2(g) + 3H2O(l)

Delta H = -1368kJ
Answered by DrBob222
You get 1368 kJ when 1 mole (46 g) is burned; how much will you get when you burn 12.5 g?
Answered by randi
335.5kj
Answered by Rght
12.5 x (1mol/46.0g) = .271 mol of ethanol

.271 x 1368 = 370

(randi did 1235 Delta H, not 1368)
Answered by YouMe Park
how about the negative sign?
Answered by Hi
-371.7
Answered by Jack
What Rght said
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