Which of the following gas molecules has the greatest standard molar entropy at 25°C?

Question

Quizplus · Accepted Answer

The standard molar entropy of a gas molecule depends on its size and complexity. As size and complexity increase, the number of ways in which the molecule can vibrate and rotate increases, leading to a greater entropy value. Since option C has the largest molecular weight and complexity due to the presence of an extra methyl group, it will have the highest standard molar entropy value at 25°C. Thus, option C is the correct answer.

Which of the Following Gas Molecules Has the Greatest Standard