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Question

Which of the following gets precipitated when dilute hydrochloric reacts with thiosulphate?


  1. Sulphur

  2. Chlorine

  3. Sulphur trioxide

  4. Sulphur monoxide


Solution

The correct option is A

Sulphur


Dilute hydrochloric acid reacts with thiosulphates to produce sodium chloride, water and sulphur dioxide gas and yellow sulphur is precipitated.

Na2S2O3+2HCl2NaCl+H2O+SO2+S

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