Several reactions and their standard reaction enthalpies at 298.15 K are given here: The standard enthalpies of
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The standard enthalpies of combustion of graphite and C2H2(g) are 393.51 and 1299.58 kJ mol1, respectively. Calculate the standard enthalpy of formation of CaC2(s) at 25°C.
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AH (kJ mol-) -127.9 CaC,(s) + 2H,O(1) → Ca(OH),(s) + CH,(g) Ca(s) + 0,(g) → Cao(;) -635.1 CaO(s) + H20(1) → Ca(OH)2(s) -65.2
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