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(Solved): From the following enthalpy of reaction data and Hf data, calculate Hf for CaC2(s) : CaC2( ...



From the following enthalpy of reaction data and ?H?f data, calculate ?H?f for CaC2(s) : CaC2(s)+2H2O(l)?Ca(OH)2(s)+C2H2(g)?H?=?127.2kJ

For H2O(l) , Ca(OH)2(s) , and C2H2(g) ?H?f is equal to ? 285.83 kJ , ? 986.2 kJ , and 227.4 kJ respectively.

Express your answer in kilojoules to three significant figures.



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