Question

Which of the following statement is correct?
(a) E꜀ₑₗₗ and ∆ᵣG of cell reaction both are extensive
properties.
(b) E꜀ₑₗₗ and ∆ᵣG of cell reaction both are intensive
properties.
(c) E꜀ₑₗₗ is an intensive property while ∆ᵣG of cell reaction
is an extensive property.
(d) E꜀ₑₗₗ is an extensive property while ∆ᵣG of cell reaction
is an intensive property.

Answer 1

c is the answer

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Answer 2

Statement which is correct is:

• An intensive property is a physical quantity whose value does not depend on the amount of the substance for which it is measured.

• An extensive property is a physical quantity whose value is proportional to the size of the system it describes, or to the quantity of matter in the system.

• From Gibbs free energy equation

i.e ∆G = -nFEcell

• We get that ∆G depends directly on number of moles. Hence, it is extensive property

•While Ecell do not depend on amount of substane. Hence, it is intensive property.

Therefore option c is correct.