Multiple ChoiceWhich element is being reduced in the following reaction? Cr2O72- + 3 HNO2 + 5 H+ → 2 Cr3+ + 3NO3- + 4 H2O1893views2rank
Multiple ChoiceIdentify the oxidizing agent and reducing agent from the following redox reaction. Ba (s) + Cl2 (g) → BaCl2 (aq)2434views7rank
Multiple ChoiceWhich element is oxidized and which is reduced in the following reaction?Hg (aq) + HgCl2 (aq) → Hg2Cl21288views5rank
Multiple ChoiceWhich of the following represents an oxidation-reduction reaction? I. PCl3 (aq) + Cl2 (g) → PCl5 (aq) II. 2 AgNO3 (aq) + Cu (s) → Cu(NO3)2 (aq) + 2 Ag (s) III. CO2 (g) + 2 LiOH (aq) → Li2CO3 (aq) + H2O (l)IV. FeCl2 (aq) + 2 NaOH (aq) → Fe(OH)2 (aq) + 2 NaCl (aq) 1452views11rank
Textbook QuestionIdentify the oxidized reactant, the reduced reactant, the oxidizing agent, and the reducing agent in the following reactions: a. Fe(s)+Cu₂+(aq) → Fe₂+(aq)+Cu(s) b. Mg(s)+Cl₂(g) → MgCl₂(s) c. 2 Al(s)+Cr₂O₃(s) → 2 Cr(s) + Al₂O₃(s)485views
Textbook QuestionPotassium, a silvery metal, reacts with bromine, a corrosive, reddish liquid, to yield potassium bromide, a white solid. Write the balanced equation, and identify the oxidizing and reducing agents.749views
Textbook QuestionIdentify each of the following as an oxidation or a reduction: c. Cr³⁺(aq) + 3e⁻ → Cr(s)242views
Textbook QuestionIn the mitochondria of human cells, energy is provided by the oxidation and reduction reactions of the iron ions in the cytochromes in electron transport. Identify each of the following as an oxidation or a reduction: a. Fe³⁺ + e⁻ → Fe²⁺231views
Textbook QuestionIn each of the following, tell whether the substance gains electrons or loses electrons in a redox reaction: a. An oxidizing agent b. A reducing agent c. A substance undergoing oxidation d. A substance undergoing reduction299views
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