Question

Obtain an expression for work done by a gas in an isothermal expansion.​

Answer 1

Answer:

Suppose 1 mole of gas is enclosed in isothermal container. Let P1 ,V1 ,T be initial pressure, volumes and temperature. Let expand to volume V2 & pressure reduces to P2 & temperature remain constant. Then, work done is given by

Answer 2

Answer:

Explanation:

Consider one gram mole of ideal gas initially with pressure, volume and temperature as P, V, T,           Let the gas expand to a volume V2, when pressure reduces to P2 and at the same temperature T          If A = Area of cross – section of piston Force = Pressure × Area  F = P x A          If we assume that piston moves a displacement d x,                                                         the work done : → d w = F d x d w = P × A × d x  d w = P × d v                                 Total work done in increasing the volume from V1 to V2

rest answer is in image

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