J.R. S. answered 04/26/18
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There isn't sufficient information provided. You would need to look up in a table the ∆Gf for C2H6O(l) and multiply that by 6. Then find the ∆Gf for C6H6(l) and multiply that by 2. Subtract this latter value from the first to get the ∆Greaction. The ∆G values for H2 and O2 are zero, so they do not need to be included in the calculations.