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5 mole of an ideal gas expands isotherma...

5 mole of an ideal gas expands isothermally and irreversibly from a pressure of 10 atm to 1 atm against a contant external pressure of 1 atm. `W_("irr")` at 300K is:

A

`-15.921 kJ`

B

`-11.224 kJ`

C

`-110.83 kJ`

D

None of these

Text Solution

Verified by Experts

The correct Answer is:
B

`int dw=-intP_("ext").dV`
`therefore" "w_("irr")=-P_("ext")[(nRT)/(P_(2))-(nRT)/(P_(1))]`
`w_("irr")=-1xx(5xx8.314xx300)xx[1-(1)/(10)]`
`w_("irr")=-11.224 " kJ"`
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