A) \[N{{a}_{2}}S+N{{a}_{2}}S{{O}_{3}}+C{{l}_{2}}\]
B) \[N{{a}_{2}}S+S{{O}_{2}}\]
C) \[N{{a}_{2}}S{{O}_{3}}+S\]
D) \[N{{a}_{2}}S+N{{a}_{2}}S{{O}_{3}}+{{I}_{2}}\]
Correct Answer: D
Solution :
Springs method: This method is used for the preparation of sodium thiosulphate (Hypo). In this method sodium sulphide and sodium sulphite and iodine reacts together to give sodium thiosulphate as.________ \[\underset{\text{Sodium}\,\,\text{sulphide}\,\,\,\,\,\,\text{Sodium}\,\,\,\text{sulphite}}{\mathop{{{I}_{2}}+N{{a}_{2}}\xrightarrow{{}}}}\,\]
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