1.

In the redox reaction2S_(2)O_(3)^(2-)+I_(2) rarrS_(4)O_(6)^(2-)+2I^(-)

Answer»

M
M/2
M/4
M/3

Solution :`2overset(2.0)(S_(2))O_3^(2-)OVERSET(1)RARROVERSET(2.5)(S_(2))O_(6)^(2-),2xx0.5=1, E=M/1`


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