AP QUIZZES - AP TOPIC 16 Electrochemistry SET E
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QUESTION 1. Which of the following is ALWAYS true of a spontaneous REDOX reaction under standard conditions?

(A) Delta G and Ecell are negative
(B) Delta G and Ecell are positive
(C) K will be >1 and Ecell will be negative
(D) Delta G is positive, Ecell is negative
(E) K will be >1 and Delta G will be negative

QUESTION 2. In the electrolysis of molten sodium chloride what are the products?

(A) Sodium at the cathode and Chlorine at the anode
(B) Chlorine at the cathode and Sodium at the anode
(C) Hydrogen at the anode and Chlorine at the cathode
(D) Hydrogen at the cathode and Chlorine at the anode
(E) None of the above

QUESTION 3. In the spontaneous reduction of Copper (II) ions with Nickel metal to form Copper metal and Nickel (II) ions, what will happen to the Ecell value when the concentration of Copper (II) ions is increased?

Cu2+ + 2e- <====> Cu (+0.34V)
Ni2+ + 2e- <====> Ni (-0.25V)


(A) Ecell will increase
(B) Ecell will decrease
(C) Ecell will be unchanged
(D) Not enough information to tell
(E) None of the above

QUESTION 4.When molten Copper (II) chloride is electrolyzed by passing 4.00 Amps for 400. seconds what is the maximum mass of copper metal that can be deposited?

(A) 0.526 g
(B) 63.5 g
(C) 6.35 g
(D) 1600 g
(E) 96500 g

QUESTION 5. If the two half-cells below were combined, into which cell do anions from the salt bridge flow?

Cu2+ + 2e- <====> Cu (+0.34V)
H+ + e- <====> 1/2 H2 (0.00V)


(A) Hydrogen
(B) Copper
(C) Neither
(D) Cannot tell from the information given
(E) None of the above




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