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3. In the balanced redox reaction equation 3 Cu() +2 NO₂ (aq) +8 H(a) →3 Cu² the oxidation number of nitrogen a. decreases by 3 b. increases by 3 increases by 2 C. d. decreases by 6 +2 NO) +4 H₂O()

3. In the balanced redox reaction equation 3 Cu() +2 NO₂ (aq) +8 H(a) →3 Cu² the oxidation number of nitrogen a. decreases by 3 b. increases by 3 increases by 2 C. d. decreases by 6 +2 NO) +4 H₂O()

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Chapter18: Electrochemistry
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4. 14-2 1. In HCO3(aq), carbon has an oxidation state of 14-6 a. 5. C. d. -4 2. The equation representing a spontaneous reaction at standard conditions is (aq) → Cos) +2Fe³+ (aq) (aq) (aq) Co²+ (aq) +2Fe²+ Sn+ +2 Br → Sn²+ (aq) + Br₂(1) 21 (aq) + Cl2(g) →→ 12(s) +2CI (aq) →Pb²+ (aq) + Fe(s) Pb+Fe²+ (aq) a. b. +4 +1 C. d. 0 3. In the balanced redox reaction equation 3 Cu() +2 NO3(aq) +8 H* (aq) →3 Cu²+ (aq) +2 NO(g) +4 H₂O the oxidation number of nitrogen a. decreases by 3 b. increases by 3 C. increases by 2 d. decreases by 6 Four metals represented by the symbols R, S, T, and V and their ions combine with each other in the following mer: S2+ (aq) + 2T(s) → 2T* (aq) + S(s) R³+ (aq) +T(s)→ No Reaction 2R³+ (aq) + 3V (s) → 3V²+ (aq) + 2R(s) When the oxidizing agents are arranged from strongest to weakest, the order is (aq) a S2 (aq), (aq), R³(aq), V2+ X. V²+ (aq), V2+ (aq), R³+ (aq), T'(aq), S2+ e. V(s), R(s), T(s), S(s) d. S(s), T(s), R(s), V(s) operates spontaneously AIRBAG MOTORJA 5. One reason that copper pipes, rather than iron pipes, are used in household plumbing is that: a) Iron has a greater tendency to be oxidized than copper b) Iron will react with dissolved minerals such as calcium salts c) Copper is a better conductor of heat energy than iron d) Commercial drain cleaners containing sodium hydroxide will react with iron. 6. An electrolytic cell differs from a voltaic cell in that the electrolytic cell a. b. consumes electricity has an anode and a cathode has a positive Enet value
Transcribed Image Text:4. 14-2 1. In HCO3(aq), carbon has an oxidation state of 14-6 a. 5. C. d. -4 2. The equation representing a spontaneous reaction at standard conditions is (aq) → Cos) +2Fe³+ (aq) (aq) (aq) Co²+ (aq) +2Fe²+ Sn+ +2 Br → Sn²+ (aq) + Br₂(1) 21 (aq) + Cl2(g) →→ 12(s) +2CI (aq) →Pb²+ (aq) + Fe(s) Pb+Fe²+ (aq) a. b. +4 +1 C. d. 0 3. In the balanced redox reaction equation 3 Cu() +2 NO3(aq) +8 H* (aq) →3 Cu²+ (aq) +2 NO(g) +4 H₂O the oxidation number of nitrogen a. decreases by 3 b. increases by 3 C. increases by 2 d. decreases by 6 Four metals represented by the symbols R, S, T, and V and their ions combine with each other in the following mer: S2+ (aq) + 2T(s) → 2T* (aq) + S(s) R³+ (aq) +T(s)→ No Reaction 2R³+ (aq) + 3V (s) → 3V²+ (aq) + 2R(s) When the oxidizing agents are arranged from strongest to weakest, the order is (aq) a S2 (aq), (aq), R³(aq), V2+ X. V²+ (aq), V2+ (aq), R³+ (aq), T'(aq), S2+ e. V(s), R(s), T(s), S(s) d. S(s), T(s), R(s), V(s) operates spontaneously AIRBAG MOTORJA 5. One reason that copper pipes, rather than iron pipes, are used in household plumbing is that: a) Iron has a greater tendency to be oxidized than copper b) Iron will react with dissolved minerals such as calcium salts c) Copper is a better conductor of heat energy than iron d) Commercial drain cleaners containing sodium hydroxide will react with iron. 6. An electrolytic cell differs from a voltaic cell in that the electrolytic cell a. b. consumes electricity has an anode and a cathode has a positive Enet value
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