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Consider the following statement and sel...

Consider the following statement and select correct option:
(I) `K_(sp)` of `Fe(OH)_(3)` in aqueous solution is `3.8xx10^(-38)` at 298 K. The concentration of `Fe^(+)` will increase when `[H^(+)]` ion concentration decreases.
(II) In a mixture of `NH_(4)Cl` and `NH_(4)OH` in water, a further amountof `NH_(4)Cl` is added. The pH of the mixture will decreases.
(III) An aqueous solution of each of the following salt `(NH_(4)I,HCOOK)` will be basic, acidic respectively.

A

only I is correct

B

only II is correct

C

only III is correct

D

II and III are correct

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