1.

In the reaction, `l_(2) + 2S_(2)O_(3)^(2-) rarr 2l^(-) + S_(4) O_(6)^(2-)`, equivalent weight of iodine will be equal toA. MB. `M//2`C. `M//4`D. `2M`

Answer» Correct Answer - B
`l_(2)^(0) + 2S_(2)O_(3)^(2-) rarr overset(-1)(2l^(-)) + S_(4)O_(6)^(2-)`
`:.` Decrease in ON of iodine per atom `=1`
`:.` Decrease in ON of iodine per molecule `= 2 xx 1 = 2` Hence, equivalent weight of iodine
`("Molecular weight of iodine")/("Total decrease in ON of iodine per molecule") = (M)/(2)`


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