For the preparation of sodium thiosulphate by Springs reaction, the reactants used are :
Na2S+Na2SO3+I2
Na2S+Na2SO3+Cl2
Na2S+SO2
Na2SO3+S
A
Na2S+Na2SO3+Cl2
B
Na2S+SO2
C
Na2S+Na2SO3+I2
D
Na2SO3+S
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Solution
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Springs reaction for the preparation of sodium thiosulphate is given below:
Na2S+Na2SO3+I2⟶Na2S2O3+2NaI
Hence, option C is correct.
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