2 mole of an ideal gas undergo isothermal and reversible expansion from 2 litre to 20 litre at 127° C the work done by the gas is

Question

2 mole of an ideal gas undergo isothermal and reversible expansion from 2 litre to 20 litre at 127° C the work done by the gas is (A) -25.2 kJ (B) -15.3 kJ (C) -7.5 kJ (D) -35.1 kJ

Tardigrade Admin · Accepted Answer

ω =-2.303 n R T log (V2/v1) =-2.303 × 2+8.31 × 400 × log (20/2) =-15.3 KJ

Q. $2$ mole of an ideal gas undergo isothermal and reversible expansion from $2$ litre to $20$ litre at $12 7^{\circ} C$ the work done by the gas is

-25.2 kJ

-15.3 kJ

-7.5 kJ

-35.1 kJ

$ω = - 2.303 n RT lo g \frac{V _{2}}{v _{1}}$
$= - 2.303 \times 2 + 8.31 \times 400 \times lo g \frac{20}{2}$
$= - 15.3 K J$

Q. 2 mole of an ideal gas undergo isothermal and reversible expansion from 2 litre to 20 litre at 127∘C the work done by the gas is