One gram-atom of graphite and one gram-atom of diamond were separately burnt to CO2. The amount of heat liberated was 393.5 kl and 395.4 kJ respectively. It is apparent that
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a
graphite has greater affinity for oxygen
b
diamond has greater affinity for oxygen
c
graphite is more stable than diamond
d
diamond is more stable than graphite
answer is C.
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Detailed Solution
The less the heat of combustion, the more stable the compound. It is also Obviously, as per the data given above.