Calculate DeltaE° for the reaction CaC2(...

Calculate DeltaE° for the reaction `CaC_2(S)+2H_2O(l) rarr Ca(OH)_2 (s)+C_2H_2(g)` if `DeltaH°_f( CaC_2=-62.0`KJ/mol)`DeltaH°_f(H_2O)=-286.0`KJ/mol `DeltaH°_f{Ca(OH)_2} =-986.0`KJ/mol `DeltaH°_f(C_2H_2)=+227.0`KJ/mol

`+122.52 kj`/`mol`

`-122.52 kj`/`mol`

`+127.48 kj`/`mol`

`-127.48 kj`/`mol`

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