REDOX REACION AND ELECTROLYSIS

1. The oxidation state of chlorine in potassium chlorate is

• A. +1
• B. +2
• C. +3
• D. +5

2. consider he equaion H₂O+2Fe²⁺+Cl₂→2Fe³⁺+2Cl⁻ +H₂O The oxidizing agent is in the above equation is

• A. Fe²⁺
• B. Cl₂
• C. Fe³⁺
• D. Cl⁻

3. The oxidation state of manganese in potassium permanganate is

• A. +7
• B. +5
• C. +3
• D. +2

4. oxidation is the process of

• A. Gain of electrons
• B. Loss of electrons
• C. Gain of hydrogen
• D. Loss of oxygen

5. Cl₂ +2NH₃ →N₂+6HCl In the above reaction, ammonia acts as

• A. a reducing agent
• B. an oxidizing agent
• C. an acid
• D. a catalyst

6. 2MnO₄⁻ +10Cl⁻+16H⁺→2Mn²⁺+5Cl₂+8H₂O. Which of the substances serves as an oxidizing agent

• A. Mn²⁺
• B. Cl⁻
• C. H₂O
• D. MnO₄⁻

7. Which of the following acts both as reducing and oxidizing agent?

• A. H₂
• B. SO₂
• C. H₂S
• D. C

8. what is the oxidation number of z in K₃ZC₆?

• A. -3
• B. +3
• C. -6
• D. 6

9. MnO₄₍ₐq₎⁻ + 8H₍ₐq₎⁺ + y → Mn₍ₐq₎²⁺ + 4H₂O₍ₗ₎ y in the equation above represents

• A. 2e⁻
• B. 3e⁻
• C. 5e⁻
• D. 7e⁻

10. Zn + CuSO₄→ZnSO₄ + Cu In the reaction above, the oxidizion agent is

• A. Zn
• B. CuSO₄
• C. ZnSO₄
• D. Cu