AP QUIZZES - AP TOPIC 16 Electrochemistry SET D
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QUESTION 1. How many electrons are being transferred in the REDOX reaction below?

Br2 + 2I- ==> 2Br- + I2


(A) 0
(B) 1
(C) 2
(D) 3
(E) 4

QUESTION 2. Which of the following species is a strong reducing agent?

(A) Na
(B) Na+
(C) H2
(D) H+
(E) Cr2O72-

QUESTION 3. Which of the following species is a strong oxidizing agent?

(A) Na
(B) Na+
(C) H2
(D) H+
(E) Cr2O72-

QUESTION 4. Iron rusts when it comes into contact with water and oxygen. The change that the iron undergoes can be summarized thus; Fe ==> Fe2+ + 2e-. When iron metal is coated with solid zinc in a process called galvanizing, the oxidation of iron is prevented even if the zinc coating does not completely cover the iron metal. Which of the following statements serves best to explain these observations?

(A) Solid zinc metal is more easily reduced than iron
(B) Solid zinc metal is more easily oxidized than iron
(C) Zinc ions are more easily reduced than iron
(D) Zinc ions are more easily oxidized than iron
(E) Solid zinc metal is more easily reduced than iron (II) ions

QUESTION 5. In electrolysis;

(A) The anode is positive, attracts anions and is where reduction takes place
(B) The anode is negative, attracts cations and is where reduction takes place
(C) The cathode is negative, attracts anions and is where oxidation takes place
(D) The cathode is negative, attract cations and is where oxidation takes place
(E) None of the above




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