The molar entropy of Pb(s) at 298 K is equal to A) C_P × 298. B) zero. C) the sum of the integral of C_PdT/T from 0 K to 298 K.

Question

Quizplus · Accepted Answer

The molar entropy of a substance at a given temperature (such as 298 K for lead, Pb(s), in this case) is determined by integrating the heat capacity (C) over temperature (T) from absolute zero (0 K) to the temperature of interest (298 K), and dividing by the temperature. This process is mathematically represented as the integral of C/T dT from 0 K to 298 K, which matches choice C.

The Molar Entropy of Pb(s) at 298 K Is Equal