Sodium thiosulphate is prepared by | CHEMISTRY - GROUP 16 ELEMENTS | SolveeIt | Solveeit

Today, August 18

Question

Sodium thiosulphate is prepared by

A

Reducing Na₂SO₄ solution with H₂S

B

Boiling Na₂SO₃ solution with S in alkaline medium

C

Neutralising H₂S₂O₃ solution with NaOH

D

Boiling Na₂SO₃ solution with S in acidic medium

Answer

Boiling Na₂SO₃ solution with S in alkaline medium

Explanation

Solution

Na₂SO₃ + S Na₂S₂O₃

In the acidified medium Na₂S₂O₃ is unstable