Q.

An insulated container contains 1 mole of a liquid molar volume 100 ml at 1 bar. When liquid is steeply passed to 100 bar, volume decreases to 99 ml. Find DH for the process in (bar.ml)

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a

9600 bar.ml

b

9800 bar.ml

c

9900 bar.ml

d

9500 bar.ml

answer is C.

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Detailed Solution

The system is subjected to irreversible adiabatic compression. From 1st law of thermodynamics ΔU=Q+W=0-Pext Vf-Vi=-100(99-100) bar.ml ΔH=ΔU+P2V2-P1V1=100+(9900-100)=9900 bar. ml
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