Loading the lesson
Loading the lesson
Search AllRounder.ai
Search the courses, subjects, tracks, games and features, or jump straight to a page.
Search the courses, subjects, tracks, games and features, or jump straight to a page.
2 cards from this section. Quick, good the night before a test.
What does standard entropy (S°) measure?
Think about the arrangement of particles.
Write the formula for the change in entropy of a reaction (ΔS_rxn°).
Consider what happens to the entropy of products and reactants.
What does standard entropy (S°) indicate about a system?
Think about how particles are organized.
Is ΔS_rxn° always positive when products are more complex molecules than reactants?
Consider the relationship between complexity and disorder.
Given that the standard entropies for A, B, C, and D are 50 J K⁻¹ mol⁻¹, 75 J K⁻¹ mol⁻¹ and 100 J K⁻¹ mol⁻¹ respectively, calculate ΔS_rxn° for the reaction: A + B → C + D.
Sum entropies of products and subtract the sum of reactants.
Explain how an increase in the number of gaseous reactants affects entropy and the spontaneity of a reaction at constant temperature.
Think about the kinetic energy and freedom of movement in gases.
5 more questions in this section. Enroll free to practise them all.
Enroll free