Chemical Thermodynamics

Grade 1045 min

Learning Objective

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

Lesson Flow

Watch Video

9 min

The Laws of Thermodynamics, Entropy, and Gibbs Free Energy

Professor Dave Explains

Practice

14 min

7 questions • Short answer

Exit Ticket

5 min

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.

Teacher Guide

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  • Answer keys for all questions
  • Differentiation strategies
  • Extension activities
  • Printable student handouts