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Q.

Enthalpy of atomization of methane is 1664 kJ/mole. Mean bond enthalpy of C-H bond will be

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a

416 kJ

b

1664 kJ

c

1236 kJ

d

832 kJ

answer is B.

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Detailed Solution

$C H_{4} (g) \overset{}{\to} C (g) + 4 H (g) Δ H = + 1664 kJ$

Mean bond enthalpy $= \frac{1664}{4} = 416 k J$

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