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categoryكيمياء schoolبكالوريوس event_available2026-07-13

السؤال

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Name: 36. What element is undergoing reduction (if any) in the following reaction? Zn(s) + 2 AgNO3(aq) A) Zn B) N C) O Zn(NO3)2(aq)+2 Ag(s) D) Ag E) This is not an oxidation-reduction reaction. 37. Determine the oxidizing agent in the following reaction. Ni(s)+2 AgClO4(aq) Ni(ClO4)2(aq)+2 Ag(s) A) Ag B) Ni C) Cl D) O E) This is not an oxidation-reduction reaction. 38. Considering the following reaction, what statement is incorrect? Cu (s) + 4 H* (aq) + 2 NO: (aq) → Cu2+ (aq) + 2 NO2 (g) +2 H₂O (1) A) NO is the oxidizing agent. B) Cu is oxidized. C) Cu2+ is the result of an oxidation. D) NO, is reduced. E) Cu is the oxidizing agent. 39. Metals react with oxygen gas to produce oxides with the general formula M,Oy. Write a balanc chemical equation for the reaction of iron to yield Iron(II) oxide. A) 4 Fe(s) + O2(g) → 2 Cu2O(s) B) Fe + O2(g) - FeO₂(s) C) 2 Fe(s) + O2(g) → 2 FeO(s) D) Fe(s) + O(g) E) 2 Fe(s) + O(g) - FeO(s) 2 Fe₂O(s) 40. Which of the following reactions is not a redox reaction? Some of the reactions may not be A) H+OH H₂O B) Bi+Fe3+. BiO3+ Fe2+ C) Ni2++ Fe3+Fe²++ Ni D) 2 Al+Fe2O3 →2 Fe + Al2O3 E) NH3+NO→ N2 + H2O

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