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Question

During a thermodynamic process, the product of PV increases by 40 L atm and the change in internal energy is 200J. Calculate the value of ΔH for the process.

A
240J
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B
3.8kJ
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C
4.2 kJ
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D
160 J
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Solution

The correct option is C 4.2 kJ
Given, U=200 J
PV=40 L atm
1 L atm=101.33 J
PV=40×101.33 J
PV=4053.2 J
Using the reaction,
H=U+PV
=200 J+4053.2 J
H=4253.2 J

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