how to make sodium thiosulphate
Answers
Answer:
Explanation:
take about 100 ml of water in a cleaned and dried 1000 ml volumetric flask.
Add about 25 gm of Sodium Thiosulphate with continues stirring.
Add about 0.2 gm of Sodium Carbonate with continues stirring.
Add more about 700 ml of water, mix.
Make up the volume 1000 ml with water.
keep the solution one hour and then carry out standardistation
Answer:
On an industrial scale, sodium thiosulfate is produced chiefly from liquid waste products of sodium sulfide or sulfur dye manufacture. In the laboratory, this salt can be prepared by heating an aqueous solution of sodium sulfite with sulfur or by boiling aqueous sodium hydroxide and sulfur according to this equation:
Chemical formula: Na, 2S, 2O, 3
Melting point: 48.3 °C (118.9 °F; 321.4 K) (pentahydrate)
Molar mass: 158.11 g/mol (anhydrous), 248.18 g/mol (pentahydrate)
Solubility in water: 70.1 g/100 mL (20 °C), 231 g/100 mL (100 °C)
Explanation: