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When 0.2g of butanol was burnt in a suit...

When 0.2g of butanol was burnt in a suitable apparatus, the heat evolved was sufficient to raise the temperature of 200g of water by `5^o` C The enthalpy of combustion of butanol in Kcal/mol will be (molar mass of butanol = 74)

A

14.8

B

74

C

37

D

370

Text Solution

Verified by Experts

The correct Answer is:
D
Heat evolved from 0.2 g `= 200 xx 5 = 1000 cal =1 kcal `
Heat evolved from 1 mole of butanol i.e 74 g
`(1)/(0.2) xx 74 = 370 ` kcal.
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NIKITA PUBLICATION-Chemical Thermodynamics & Energetics-QUESTION FROM COMPETITIVE EXAM
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