When water of mass m and specific heat c is heated from absolute temperature T₁ to absolute temperature T₂,its change in entropy is A)cm ln(T₂/T₁) B)cm (T₂/T₁) C)cm (T₂-T₁)/T₁ D)cm (T₂ -T₁)/T₂ E)cm (T₂-T₁)/(T₂ + T₁)

Question

Quizplus · Accepted Answer

The change in entropy of a system can be calculated using the formula ΔS = ∫(dQ/T), where dQ is the amount of heat absorbed by the system and T is the temperature at which it is absorbed. For a constant pressure process (which is a reasonable assumption for heating water in an open container), dQ = mcΔT, where ΔT is the change in temperature. So, ΔS = ∫(dQ/T) = ∫(mcΔT/T) = mc ln(T₂/T₁) Therefore, the correct choice is A.

When Water of Mass M and Specific Heat C Is