AP Chemistrymediummcq1 pt
Entropy (S) generally increases when:
A.A gas condenses to a liquid
B.A solid forms from a solution
C.A solid sublimes to a gas
D.Temperature decreases
Explanation
Core Concept
Entropy increases with greater molecular disorder. Sublimation (solid → gas) greatly increases entropy because gas molecules have much more freedom of movement than molecules in a solid.
Correct Answer
CA solid sublimes to a gas
More Unit 9: Applications of Thermodynamics practice questions
- easyWhat is the function of the anode in electrorefining copper?
- easyWhich change increases the entropy of a system?
- hardUsing E°: Fe²⁺/Fe = −0.44 V and Fe³⁺/Fe²⁺ = +0.77 V, which statement is correct?
- hardWhich reaction represents the cathode half-reaction in the hydrogen fuel cell?
- hardA 3.00 A current passes through AgNO₃ solution for 1930 s. What mass of silver deposits? (Ag = 107.9 g/mol)
Practice more AP Chemistry questions with full explanations
Practice Unit 9: Applications of Thermodynamics Questions →