JEE MAIN - Chemistry (2021 - 22th July Evening Shift - No. 20)
If the standard molar enthalpy change for combustion of graphite powder is $$-$$2.48 $$\times$$ 102 kJ mol$$-$$1, the amount of heat generated on combustion of 1 g of graphite powder is ___________ kJ. (Nearest integer)
Answer
21
Explanation
1 mol graphite = 12 gm C
For 1 g of graphite = $${{248} \over {12}}$$ = 20.67 kJ/gm heat evolved.
For 1 g of graphite = $${{248} \over {12}}$$ = 20.67 kJ/gm heat evolved.
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