ThermochemistryHard

Question

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 ΔE per mole of methane?

Options

A.1 kJ
B.160 kJ
C.−160 kJ
D.−1 kJ

Solution

Heat released by reaction = c.ΔT = 500 × 2 =1000J

$\therefore\Delta E = - \frac{1000}{0.1} \times 16 = - 160\text{ kJ/mol}$

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