The combustion enthalpies of carbon , hydrogen and methane are -395.5 kJ mol⁻¹

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The combustion enthalpies of carbon , hydrogen and methane are -395.5 kJ mol⁻¹,-284.8 kJ mol⁻¹ and -890.4 kJ mol⁻¹ respectively at 25⁰ C. The value of standard formation enthalpies of methane at that temperature is

Options

(a) 890.4 kJ mol⁻¹
(b) -298.8 kJ mol⁻¹
(c) -74.7 kJ mol⁻¹
(d) -107.7 kJ mol⁻¹

Correct Answer:

-74.7 kJ mol⁻¹

Explanation:

No explanation available. Be the first to write the explanation for this question by commenting below.

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Topics: Thermodynamics (179)
Subject: Chemistry (2512)

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