Question 1
Which of these must be negative for a reaction to be thermodynamically favored?
Correct Answer:
∆G°
Explanation:
Correct answer: ∆G°
Question 2
Why is ∆H° a state function?
Correct Answer:
Its value does not depend on the path between the initial and final states.
Explanation:
Correct answer: Its value does not depend on the path between the initial and final states.
Question 3
Scientists divide energy into two broad groups. They are
Correct Answer:
potential and kinetic
Explanation:
Correct answer: potential and kinetic
Question 4
How can you tell if a chemical reaction or a physical process is endothermic or exothermic?
Correct Answer:
All of the above.
Explanation:
Correct answer: All of the above.
Question 5
When 0.400 g of CH 4 is burned in excess oxygen in a bomb calorimeter that has a heat capacity of 3245 J °C −1 , a temperature increase of 6.795 °C is observed. What is the value of q and ∆H for this combustion reaction?
Correct Answer:
–22.05 kJ and –22.05 kJ
Explanation:
Correct answer: –22.05 kJ and –22.05 kJ
Question 1
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About this Exam

Prepare with the AP Chemistry Unit 9 Thermodynamics and Electrochemistry practice quiz. This question bank includes 24 questions covering reaction, heat, energy, combustion, and value. Use it to review important concepts, identify knowledge gaps, and build confidence for the related exam, course, or assessment.

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AP Chemistry Unit 9 Thermodynamics and Electrochemistry

This practice set contains 24 questions from the matching question bank and focuses on reaction, heat, energy, combustion, and value. Work through each question carefully, review the provided solutions, and revisit topics that need more study before your next attempt.

This is an independent study resource intended for practice and review; it is not an official examination or an endorsement by any organization named in the title.

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