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Q.

The heat capacity of bomb calorimeter is $500 J / ° C . A 2 ° C$ rise in temperature has been observed on the combustion of $0.1 g$ of methane. What is the value of $Δ E$ per mole of methane?

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a

1 kJ

b

160 kJ

c

-160 kJ

d

-1 kJ

answer is C.

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Detailed Solution

detailed_solution_thumbnail

Heat released by reaction $= C Δ T$
$= 500 x 2 = 1000 J$
$Δ E = \frac{- 1000}{0.1} x 16 = - 160 kJ/mol$

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