Question

3. Which statement is incorrect?
a) Increase in Gibb's free energy is equal to useful work done.
b) Standard Gibb's free energy of pure element is zero.
c) Entropy of perfectly crystalline solid is always zero.
d) Endothermic reactions are spontaneous at high temperature.
or changehoud hai​

Answer 1

Answer:

the option a is wrong because is not in perfect tense

Answer 2

Answer:

For a reaction, ΔG=ΔG

∘

+RT㏑K

∴ As ΔG

∘

=0

ΔG=RT㏑K

But for equilibrium reaction, ΔG=0

∴RT㏑K

eq

=0

∴K

eq

=1

Therefore, the value of equilibrium constant of the reaction is 1.