NEET UG CHEMISTRY MCQ: THERMODYNAMICS

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Application +4 | -1

The quantity of heat (in

J

) required to raise the temperature of

1.0 \mathrm{~kg}

of ethanol from

293.45 \mathrm{~K}

to the boiling point and then change to liquid to vapour at that temperature is closest to [Given, boiling point of ethanol

351.45 \mathrm{~K}

. Specific heat capacity of liquid ethanol

2.44 \mathrm{~J} \mathrm{~g}^{-1} \mathrm{k}^{-1}

. Latent heat of vaporisation of ethanol

855 \mathrm{~J} \mathrm{~g}^{-1}

]

View answer and explanation

Correct option: D

9.97 \times 10^5

Option D (

9.97 \times 10^5

) is correct because it accounts for both the heat required to raise the temperature to the boiling point and the heat of vaporization.

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