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Combustion of sucrose is used by aerobic...

Combustion of sucrose is used by aerobic organisms for providing energy for the life sustaining process. If all the capturing of energy from the reaction is done through electrical process (non P-V work), then calculate, maximum available energy which can be captured by combustion of 34.2 g of sucrose :
(Given : `DeltaH_("combustion")("sucrose")=-6000kJmol^(-1)`
`DeltaS_("combustion")=180j//K-mol` and bodyntemperature is 300 K)

A

600 kJ

B

594.6 kJ

C

5.4 kJ

D

605.4 kJ

Text Solution

Verified by Experts

The correct Answer is:
D
Sucrose (molecular weight) = 342
From `DeltaG = DeltaH - TDeltaS = -6000 xx 10^(3) - 300 xx 180 = -6504 xx 10^(3) kJ//mol`
For 34.2 gm energy available `=(6054)/342 xx 34.2 = 605.4` kJ
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