Identify the correct expression for the work done (W) by n moles of an ideal gas when…

PHYSICS · Single correct · A Level · Physics · Engineering physics · Engineering physics

Problem

Identify the correct expression for the work done (W) by n moles of an ideal gas when it expands isothermally at temperature T from an initial volume

V_i

to a final volume

V_f

. (a)

W = nRT\left(\dfrac{V_f - V_i}{V_i}\right)

(b)

W = nRT\ln\dfrac{V_f}{V_i}

(c)

W = nRT\ln\dfrac{V_i}{V_f}

(d)

W = \dfrac{3}{2}nRT\ln\dfrac{V_f}{V_i}