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TS EAMCET 6-Aug-2021 Shift 1 Question Paper

Section: Chemistry

Question : 131 of 160

Marks: +1, -0

Which of the following relation is correct?

Solution:

The Gibb's function is defined in terms of temperature

(T)

, enthalpy

(H)

, and entropy

(S)

G=H-T S

In a thermodynamic process with no composition change, change in Gibb's energy is

d G = d H - T d S - S d T

. . . (i)

Using the combined first and second laws

dU\;\; =T dS-p dV \;\text{and}\; dH=T dS+V dp \;\text{in (i) gives}\;

dG\;\; =V dp-S dT

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