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Questions  >>  JEEMAIN and NEET  >>  Physics  >>  Class11  >>  Thermodynamics
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Compute the heat of formation of liquid methanol in kilojoules per mole, using the given data: \[\] $ \Delta H_{vap}$ of liquid methanol $= -38\: kJ/mol, \Delta H_f^{\circ}\: of\: H(g), C(g), O(g)$ respectively are $218, 715\: and\: 247\: kJ/mol$. Also, $ \Delta H_{C-H}, \Delta H_{C-O}, \Delta H_{O-H}$ being $415, 356, 463 \: kJ/mol$ respectively.

$\begin {array} {1 1} (A)\;228\: kJ/mol & \quad (B)\;-228\: kJ/mol \\ (C)\;266 \: kJ/mol & \quad (D)\;-266 \: kJ/mol \end {array}$

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