Question

a) The equilibrium constant for a reaction is 10. What will be the value of $\Delta G$? $R=0.8134J/K,T=300K$.
b) Define second law of thermodynamics.
c) What is meant by extensive properties?

Answer 1

Solution:-

(a) As w e know that,

$\Delta G-2.303RT;\log K_c$

Given:-

$K_c=10$

$R=8.314J/mol-K$

$T=300K$

$\therefore \Delta G=-2.303\times 8.314\times 300\times \log 10$

$\Rightarrow \Delta G=-5744.14J/mol$

(b) Second law of thermodynamics $\to$

The Second Law of Thermodynamics states that the state of entropy of the entire universe, as an isolated system, will always increase over time. It also states that the changes in the entropy in the universe can never be negative.

(c) Extensive properties $\to$

An extensive property is a property of matter that changes as the amount of matter changes.

E.g.- mass, volume, etc.