1.

The most commonly used reducing agent is(i) AlCl3(ii) PbCl2(iii) SnCl4(iv) SnCl2

Answer»

(iv) +4 oxidation state of Sn is more stable than +2 oxidation state. Therefore, Sn2+ can be easily oxidised to Sn4+ and hence SnCl2 acts a reducing agent.
SnCl2 + 2Cl → SnCl4 + 2e-



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