This hydrocarbon is A ethyne B propyne C propene D propane (Total 1 mark) 10. Consider the reactions C2H4(g) + 2O2(g) 2CO(g) + 2H2O(g) = kJ mol−1 → ∆H −758 2C(s) + 2H2(g) C2H4(g) = +52 kJ mol−1 → ∆H H2(g) + O2(g) H2O(g) = kJ mol−1 → ∆H −242 The enthalpy of formation of carbon monoxide is A kJ mol−1 −111 B kJ mol−1 −163 C kJ mol−1 −222 D -464 kJ mol−1 (Total 1 mark)
This hydrocarbon is A ethyne B propyne C propene D propane (Total 1 mark) 10. Consider the reactions C2H4(g) + 2O2(g) → 2CO(g) + 2H2O(g) ∆H = −758 kJ mol−1 2C(s) + 2H2(g) → C2H4(g) ∆H = +52 kJ mol−1 H2(g) + O2(g) → H2O(g) ∆H = −242 kJ mol−1 The enthalpy of formation of carbon monoxide is A −111 kJ mol−1 B −163 kJ mol−1 C −222 kJ mol−1 D -464 kJ mol−1 (Total 1 mark)
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