- #1
philtered
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Homework Statement
How many grams of ice at 0°C could be melted by the heat produced when 10.0g of ethanol is burned?
Homework Equations
So I wrote out the combustion reaction:
C2H5OH +3O2 ---> 2CO2 + 3H2O
The Attempt at a Solution
First I though I had to find heat of formation for that reaction, which I found to be -1235.6kJ (So this would be the heat given off when ethanol is burned correct?)
Hf=products-reactants
Hf=[-393.6(2)+-242(3)]-[-277.6+0]
Hf=-1235.6kJ
I wasn't sure if I had to use that number or if I had to just pull the Hf number off my chart for ethanol (-277.6kJ)
I have the answer given to me, but I'm stuck at converting my kJ to g of water. (Answer is 802g)
Tried: 1235.6kJ[1mol/6.03kJ][18.02g/1mol]