
Interpretation:From the given reactionoxidizing and reducing agent needs to be identified.
Concept introduction:Oxidizing agent gains one or more electrons from another reactant. Due to this reason oxidizing agent gets reduced and oxidizes other species. Reducing agent donates electrons to another reactant.

Answer to Problem 4STP
Correct Answer: Option A.
Explanation of Solution
Reason for correct option:
Given reaction is as follows:
In this reaction oxidation state of chlorinedecreases from 0 to -1 and oxidation state of bromine increases from -1 to 0. Thus, in the given reaction,chlorine acts as oxidizing agent and bromine (NaBr) acts as reducing agent.
Reason for incorrect option:
B. NaBr = oxidizing agent,
NaBr is a reducing agentbecause oxidation state of Br increases from -1 to 0 in the reaction and
C.
D. NaCl=oxidizing agent, NaBr = reducing agent
NaBr = reducing agent is a reducing agent but NaCl is not an oxidizing agent as Cl- in NaCl ca not further reduced.
Chapter 18 Solutions
World of Chemistry
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