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In the reaction H2S + Cl2 → 2HCI + S, H2S acts as:

Correct answer: A. Reducing agent

  • A. Reducing agent
  • B. Nitrating agent
  • C. Oxidizing agent
  • D. Sulphonating agent

Explanation

Option A is correct.In the reaction H2S + Cl2 → 2HCl + S, H2S acts as a reducing agent. A reducing agent is a substance that loses electrons in a chemical reaction. In this reaction, H2S loses electrons to Cl2, which is oxidized. This is because Cl2 is more electronegative than H2S, so it has a greater tendency to attract electrons. The oxidation state of sulfur in H2S is -2, and the oxidation state of sulfur in S is 0. This means that sulfur has gained 2 electrons in the reaction, which is the definition of reduction.

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Electrochemistry describes electron transfer through oxidation and reduction, identifies oxidizing and reducing agents, and applies oxidation numbers to balance redox equations. It also covers electrode potential and the standard hydrogen electrode, which provides the reference for comparing the reduction tendencies of other electrodes.

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