vi. Obtain the expression for work done in chemical reaction.
W = -PextΔV ....(1)
W = -PΔV
= -P(V2 - V1)
W = -PV2 + PV1 .....(2)
PV1 = n1RT
PV2 = n2RT ....(3)
By substituting equation (3) into equation (2), we obtain:
W = -n2RT + n1RT
= -(n2 - n1)RT
= -ΔngRT .....(4)
Chemical Thermodynamics Chapter 4 Chemistry Class 12 Textbook Solution