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CHM 101 Chemical Thermodynamics Objective Question
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Question

For the formation of H₂O₂(l) from H₂(g) and O₂(g), ΔH° = -187.78 kJ/mol and ΔS° = -226.3 J/mol·K. What is ΔG° at 298 K?
Options
A -120.4 kJ/mol
Correct Answer
B +120.4 kJ/mol
C -187.8 kJ/mol
D -226.3 kJ/mol
Correct Answer

Option A is the correct answer.

Detailed Explanation

ΔG° = ΔH° - TΔS° = -187.78 - (298)(-0.2263) = -187.78 + 67.4 = -120.4 kJ/mol. The negative value indicates the reaction is spontaneous under standard conditions.

Hint

The notes provide this exact calculation.

Question Info

Course: CHM 101
Topic: Chemical Thermodynamics
Type: Objective
Difficulty: Not specified
Question 974 of 1872
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