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CGP EDU Academic Team
Published on: August 14, 2026
One litre sample of a mixture of CH 4 and O 2 measured at 32ºC and 760 torr, was allowed to react at constant pressure in a calorimeter. The complete combustion of CH 4 to CO 2 and water caused a temperature rise in calorimeter of 1 K. Calculate mole % of CH 4 in original mixture.[Given : Heat of combustion of CH 4 is – 210.8 Kcal/mol. Total heat capacity of the calorimeter = 2108 cal/K]
Text Solution
Verified by ExpertsThe correct answer is:
CHECK THE SOLUTION.
(25%.)
Heat generated = C T Δ T = 1260 × 0.667 cal.
∴ 
= 
= 0.01
n total = 
= 0.04 ∴ mol% = 
× 100 = 25%
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