Reaction: CaC2(s) + 2H2O(l) → Ca(OH)2(s) + C2H2(g) ΔH° = -127.2 kJ
Calcium carbide (CaC2) reacts with water to form acetylene (C2H2) and Ca ( OH )2.
You may want to reference (Pages 187 - 190) Section 5.7 while completing this problem.
From the following enthalpy of reaction data and data in Appendix C, calculate ΔH°f for CaC2 is:
CaC2(s) + 2H2O(l) → Ca(OH)2(s) + C2H2(g) ΔH° = -127.2 kJ
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