Key Question #16 - Lesson 16 Key Questions 77) a) An...

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Lesson 16 Key Questions 77) a) An oxidizing agent accepts electrons and, consequently become reduced. b) An oxidized substance is a substance that has given-up electrons. c) A reducing agent gives-up electrons and become oxidized. d) A reduced substance is a substance that has accepted electrons. 78) a) 5+ b) 3- b) 6+ c) 6+ 79) a) SO 3 2- + MnO 4 - + H + Mn 2+ + SO 4 2- + H 2 O(l) SO 3 2- + H 2 O SO 4 2- + 2H + + 2e- (oxidation) MnO 4 - + 8H + + 5e- Mn 2+ + 4H 2 O (reduction) 5SO 3 2- + 2MnO 4 - + 6H + 5SO 4 2- + 2Mn 2 + + 3H 2 O b) Cl 2 (g) + OH - Cl - + ClO 3 - + H 2 O(l) Cl 2 + 2e- 2Cl - (reduction) Cl 2 + 3H 2 O ClO 3 - + 6H + + 5e- (oxidation) 7Cl 2 + 6H 2 O 10Cl - + 2ClO 3 - + 12H + c) SO 4 2- + I - + H + S 2- + I 2 (s) + H 2 O(l) SO 4 2- + 8H + + 8e- S 2- + 4H 2 O (reduction) 2I - I 2 + 2e- (oxidation) SO 4 2- + 8I - + 8H + S 2- + 4I 2 + 4H 2 O 80) a) B + + e- B(s) D 2+ + 2e- D(s) C 2+ + 2e- C(s) A 2+ + 2e- A(s) 2H + + 2e- H 2 (s)
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Key Question #16 - Lesson 16 Key Questions 77) a) An...

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