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One mole of an ideal gas is expanded fre...

One mole of an ideal gas is expanded freely and isothermally at `300 K` from `10` litres to `100` litres. If `DeltaE=0`, the value of `DeltaH` is

A

`10 kJ`

B

`200 kJ`

C

`-200 kJ`

D

Zero

Text Solution

Verified by Experts

The correct Answer is:
D
`DeltaH=DeltaE+P_(ext)DeltaV`
As the gas expands freely `P_(ext)=0`
`DeltaE=0`
`:. DeltaH=0+0(100-10)=0`
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