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The quantity of heat (in J) required to ...

The quantity of heat (in J) required to raise temperature of 1.0 kg of ethanol from 293.45 K to the boiling point and then change the liquid to vapor at that temperature is closest to
[Given , Boiling point of ethanol 351.45K]
Specific heat capacity of liquid ethanol `2.44Jg^(-1)K^(-1)`
latent heat of vaporization of ethanol `855Jg^(-1)K^(-1)`

A

`1.42xx10^(2)`

B

`9.97xx10^(2)`

C

`1.42xx1^(5)`

D

`9.97xx10^(5)`

Text Solution

Verified by Experts

The correct Answer is:
D
`q=mc Deltat+"heat of vapourisation"`
`=100xx2.44(351.45-293.45)+855xx1000J`
`=9.97xx10^(5)J`
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