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The molar enthalpies of combustion of C2H2(g), C(graphite) and H2(g) are - 1300, -394, and -286 kJ mol-1, respectively.The standard enthalpy of formation of C2H2(g) is(magnitude only)---------------kJ/mole

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answer is 226.

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Detailed Solution

ΔfH⊝=ΔfH⊝P−ΔfH⊖R

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