Which of the following compounds has the highest standard entropy per mole at 298 K? A)H₂O(l) B)CaCO₃(s) C)CO(g) D)SiO₂(s) E)CH₃OH(l)

Question

Quizplus · Accepted Answer

The standard entropy of a substance is related to the number of particles and the extent of their motions. For a gas, the particles are free to move and have more possible configurations, leading to a higher entropy. Among the given compounds, only CO (g) is a gas at 298 K, so it has the highest standard entropy.

Which of the Following Compounds Has the Highest Standard Entropy