Question

In an isobaric process, when temperature changes from T₁ to T₂, ΔS is equal to

(a) 2.303 C_p log (T₂toT₁)

(b) 2.303 C_p ln (T_2/T₁)

(c) C_p ln (T₁/T₂)

(d) C_v In (T₂/T₁)

Answer 1

Correct option   (a) 2.303 C_p log (T₂toT₁)

Explanation:

The entropy change for a process, when T and P are the variables is given by

For an isobaric process P₁= P₂ Hence the above equation reduces to