Sodium thiosulphate is a

Question

Sodium thiosulphate is a (A) reducing agent (B) oxidising agent (C) complexing agent (D) bleaching agent

Tardigrade Admin · Accepted Answer

The presence of excess of sulphur makes sodium thiosulphate a useful reducing agent.

2 N a_{2} S_{2} O_{3} + I_{2} \to N a_{2} S_{4} O_{6} + 2 N a I

This reaction is applied in volumetric estimation of iodine. In this reaction sodium thiosulphate acts as a reducing agent

Q. Sodium thiosulphate is a