Question Detail

CHM 101 Chemical Thermodynamics Objective Question
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Question

Do elements in their standard states have zero S° at 298 K?
Options
A No, unlike enthalpy, elements in their standard states have nonzero S° values at 298 K because the reference for entropy is 0 K
Correct Answer
B Yes, like enthalpy of formation
C Only gases have nonzero S°
D Only solids have zero S°
Correct Answer

Option A is the correct answer.

Detailed Explanation

Unlike enthalpy, elements in their standard states have nonzero S° values at 298 K because the reference for entropy is 0 K, not the standard state. Values are tabulated relative to S = 0 at 0 K.

Hint

The notes explain this distinction.

Question Info

Course: CHM 101
Topic: Chemical Thermodynamics
Type: Objective
Difficulty: Not specified
Question 950 of 1872
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