
Entropy and Thermodynamics Flashcard
Flashcard
•
Chemistry
•
University
•
Practice Problem
•
Hard
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1.
FLASHCARD QUESTION
Front
What happens when a voltaic cell reaches equilibrium?
Back
Ecell = 0
2.
FLASHCARD QUESTION
Front
Which process results in an increase in entropy?
Back
Dissolution of salt in water
3.
FLASHCARD QUESTION
Front
Identify the oxidizing agent in a reaction occurring in basic solution: Zn(s), NO₃⁻ (aq), OH⁻ (aq), H₂O(l), NH₃(aq).
Back
NO₃⁻ (aq) (the nitrogen)
4.
FLASHCARD QUESTION
Front
What is the oxidation number of chromium in ammonium dichromate, (NH₄)₂Cr₂O₇?
Back
+6
5.
FLASHCARD QUESTION
Front
Which statement does not characterize an oxidizing agent?
Back
An example of a good oxidizing agent is an alkali metal, such as Na.
6.
FLASHCARD QUESTION
Front
Define entropy in the context of thermodynamics.
Back
Entropy is a measure of the disorder or randomness in a system.
7.
FLASHCARD QUESTION
Front
What is the second law of thermodynamics?
Back
The total entropy of an isolated system can never decrease over time.
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