AP Chemistry Unit 9 - Applications of Thermodynamics

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Chemistry
•
11th - 12th Grade
•
Hard
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1.
FLASHCARD QUESTION
Front
What is an endothermic process?
Back
An endothermic process is a chemical reaction or physical change that absorbs heat from its surroundings, resulting in a decrease in temperature of the surroundings.
2.
FLASHCARD QUESTION
Front
What happens during the melting of an ice cube?
Back
The melting of an ice cube is an endothermic process where heat is absorbed from the surroundings, causing the solid ice to change into liquid water.
3.
FLASHCARD QUESTION
Front
What is the standard cell potential (E°) for the reaction 2Al + 3Ni²⁺ → 2Al³⁺ + 3Ni?
Back
E° = 1.43 V.
4.
FLASHCARD QUESTION
Front
What does a positive E°cell indicate about a reaction?
Back
A positive E°cell indicates that the reaction is spontaneous under standard conditions.
5.
FLASHCARD QUESTION
Front
What does a negative G° indicate about a reaction?
Back
A negative G° indicates that the reaction is spontaneous under standard conditions.
6.
FLASHCARD QUESTION
Front
What is the half-reaction occurring at the anode during electrolysis of water?
Back
2 H₂O(l) → O₂(g) + 4 H⁺(aq) + 4 e⁻.
7.
FLASHCARD QUESTION
Front
What is the role of KMnO₄ in redox reactions?
Back
KMnO₄ acts as an oxidizing agent, facilitating the oxidation of other substances.
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