Assuming the following reaction proceeds in the forward direction, 3 Sn^4+(aq) + 2 Cr(s) rightarrow 3 Sn^2+(aq) + 2 Cr^3+(aq) Sn^4+(aq) is the reducing agent and Cr(s) is the oxidizing agent. Cr(s) is the reducing agent and Sn^2+(aq) is the oxidizing agent. Sn^4+(aq) is the reducing agent and Sn^2+(aq) is the oxidizing agent. Cr(s) is the reducing agent and Cr^3+(aq) is the oxidizing agent. Cr(s) is the reducing agent and Sn^4+(aq) is the oxidizing agent.
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