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Four grams of graphite is burnt in a bom...

Four grams of graphite is burnt in a bomb calorimeter of heat capacity `30kJK^(-1)` is excess of oxygen at 1 atmospheric pressure. The temperature rises from 300 to 304 K. What is the enthalpy of combustion of graphite (in kJ `"mol"^(-1)`)?

A

360

B

1440

C

`-360`

D

`-1440`

Text Solution

Verified by Experts

The correct Answer is:
C
`Delta E= C xx Delta t xx (M)/(m) = 30 xx 4 xx (12)/(4)= 360`
`Delta E= -360 kJ mol^(-1)`
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