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X2+X^- iff X3^- (x = iodine) This react...

`X_2+X^- iff X_3^-` (x = iodine) This reaction is set up in aqueous medium. We siart with 1 mol of `X_2` and 0.5 mol of `X^-` in 1L flask. After equilibrium is reached, excess of `AgNO_3` gave 0.25 mol of yellow ppt. equilibrium constant is

A

1.33

B

2.66

C

2

D

3

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A
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