What is the sign of ΔS for each of the following processes?
I.The separation of gaseous molecules of UF₆,into ²³⁸UF₆ and ²³⁵UF₆ at
Constant temperature and pressure.
II.The dissolving of I₂(s) in CCl₄(l) .

Question

Quizplus · Accepted Answer

The separation of gaseous molecules into different isotopes results in a decrease in entropy (ΔS is negative) because the system becomes more ordered. Dissolving a solid into a liquid generally increases entropy (ΔS is positive) because the solid particles become more dispersed in the solution.

What Is the Sign of ΔS for Each of the Following