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Two moles of an ideal gas expanded isoth...

Two moles of an ideal gas expanded isothermally and reversibly from `1L` to `10L` at `300K`. What is the enthalpy change?

A

`- 11.47 kJ`

B

`11.47 kJ`

C

`0 kJ`

D

`4.98 kJ`

Text Solution

Verified by Experts

The correct Answer is:
C
Accroding to thermodynamics,
`H = U + PV`
`:. Delta H = Delta U + Delta (PV)`
For an ideal gas,
`pV = nRT`
`:. Delta H = Delta U + Delta (nRT)`
`= Delta U + nRT`
For an isothermal and reversible process, we have
`Delta T = 0`
`Delta U = 0`
`:. Delta H = 0`
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