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Calculate the equivalent weight of hypo based on its reaction with iodine. |
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Answer» Solution :Hypo reduces IODINE to iodide and the chemical equation is given as `2Na_(2)S_(2)O_(3)+I_(2)to2NaI +Na_(2)S_(4)O_(6)` Sum of the oxidation number of .S. in reactions =2 (-2+6) =+8 Sum of the oxidation numberof .S. in products `=4"x"+2.5=+10` Change in oxidation number of S is 2 Change in oxidation number per mole of sodium thiosulphate =1 Chemical formula of hypo is `Na_(2)S_(2)O_(3) . 5H_(2)O` Formula weight of hypo = 158+90 =248 Equivalent weight`=("Formula weight")/(1)=248` |
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