1.

Temperature of1 mole of a gas is increased by 1^(@) at constant pressure. Work done is

Answer»

2 cal
3 cal
4 cal
5 cal

Solution :At temp. T, PV`=`RT
When temp. is INCREASED by `1^(@)`, at CONSTANT pressure, suppose volume increased by `DELTAV`
`:. P ( V+DeltaV) = R (T+1) `or`PV + P DeltaV =RT + R `
But`PV =RT :. P Delta V = R`,
i.e., work done `=R= 2 cal`.


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