Chemical Thermodynamics

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Objective

I can predict whether a reaction will be spontaneous at a given temperature using Gibbs free energy.

Part 1 of 3

Warm-up video

Professor Dave Explains · 8:12Vetted channel

We don't generate video — this one is by Professor Dave Explains on YouTube. The practice questions and exit ticket below were drafted by AI for this objective, and every question is editable in the teacher guide.

Part 2 of 3

Practice

7 questions

1

Define Gibbs free energy and explain its relationship to the spontaneity of a reaction.

2

State the equation for Gibbs free energy and identify what each variable represents.

Part 3 of 3

Exit ticket

Quick comprehension check

For a reaction where ΔH = -100 kJ/mol and ΔS = -50 J/(mol·K), determine if the reaction is spontaneous at 25°C (298 K). Show your calculations. A reaction has ΔH = +20 kJ/mol and ΔS = +60 J/(mol·K). Above what temperature will this reaction be spontaneous? Show your calculations.

Sample answer included in the free materials

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