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Oxidizing Agents and Reducing Agents

Chemistry ⇒ Redox Reactions and Electrochemistry

Oxidizing Agents and Reducing Agents starts at 10 and continues till grade 12. QuestionsToday has an evolving set of questions to continuously challenge students so that their knowledge grows in Oxidizing Agents and Reducing Agents. How you perform is determined by your score and the time you take. When you play a quiz, your answers are evaluated in concept instead of actual words and definitions used.
See sample questions for grade 11
Describe the role of hydrogen peroxide (H2O2) in redox reactions.
Explain why fluorine (F2) is the strongest oxidizing agent among the halogens.
Explain why potassium permanganate (KMnO4) is considered a strong oxidizing agent.
Identify the reducing agent in the following reaction: 2Na + Cl2 → 2NaCl
In the reaction 2H2 + O2 → 2H2O, identify the oxidizing agent.
In the reaction Fe2+ + Cl2 → Fe3+ + 2Cl-, which species is reduced?
In the reaction: 2Al + 3CuSO4 → Al2(SO4)3 + 3Cu, which element is reduced?
In the reaction: 2K + Br2 → 2KBr, which element is oxidized?
In the reaction: 2Na + 2H2O → 2NaOH + H2, which substance is the oxidizing agent?
Arrange the following species in order of increasing oxidizing strength: Br2, Cl2, I2.
Consider the following redox reaction: Cr2O72- + 6Fe2+ + 14H+ → 2Cr3+ + 6Fe3+ + 7H2O. Identify the oxidizing agent and justify your answer based on changes in oxidation states.
Explain, with reference to electron transfer, why a reducing agent is itself oxidized in a redox reaction.
Given the standard reduction potentials: Ag+/Ag = +0.80 V, Cu2+/Cu = +0.34 V, Zn2+/Zn = -0.76 V, which metal is the strongest reducing agent?
In the reaction between hydrogen sulfide (H2S) and chlorine gas (Cl2): H2S + Cl2 → 2HCl + S, which substance is oxidized and which is reduced?