Chemical Forums

Chemistry Forums for Students => Analytical Chemistry Forum => Topic started by: kailash on July 30, 2020, 02:56:08 AM

Title: Na2S to Na2S2O3 oxidation
Post by: kailash on July 30, 2020, 02:56:08 AM
i have a sodium sulfide aqueous solution and i want to change in sodium thiosulphate by only air oxidation.
for this i make sodium sulfide solution and leave for air oxidation for 6 hour.
after this i analyse both solution but  nothing find any reducing compound (Na2S2O3 ) after oxidation.
any suggestion
Title: Re: Na2S to Na2S2O3 oxidation
Post by: chenbeier on July 31, 2020, 01:44:32 PM
You have to add sulfurdioxide SO2.
Oxygen will not oxidate it.
Title: Re: Na2S to Na2S2O3 oxidation
Post by: kailash on August 01, 2020, 02:44:51 AM
You have to add sulfurdioxide SO2.
Oxygen will not oxidate it.
thank you so much