Which of the following statement is/are correct?

Options

A. `Crl_(3)+KOH+Cl_(2)toK_(2)CrO_(4)+KCl+KlO_(4)+H_(2)O`
In the balanced chemical reaction, stoichiometric coefficient of `KOH` is 64
B. `(NH_(4))_(2)Cr_(2)O_(7)overset(Delta)(to)N_(2)+Cr_(2)O_(3)+4H_(2)O`
`n` Factor of `(NH_(4))_(2)Cr_(2)O_(7)` is 12
C. `[Fe(CN)_(6)]^(3-)toFe^(3+)+CO_(2)+NO_(3)^(-)`
`n`-Factor for `[Fe(CN)_(6)]^(3-)`is 60
D. `MNO_(4)^(3-)overset(H^(+))(to)MNO_(4)^(-)+MnO_(2)`
Eq. wt. of `MnO_(4)^(2-)` is 178.5

Answer

A, C, D

Explanation

(A) `2Crl_(3)+27Cl_(2)+64KOHimplies2K_(2)CrO_(4)+54KCl+6KlO_(4)+32H_(2)O`
(B) `n` -Factor of `(NH_(4))_(2)Cr_(2)O_(7)` is 6
(C) `[overset(+3)(Fe)(overset(+2)(C)overset(-3)(N))_(6)]impliesFe^(3+)+overset(+4)(C)O_(2)+overset(+5)(N)O_(3)^(-)`
`n`- Factor `=60`.
(D) `underset(n-"Factor"=2/3) overset(+6)(Mn)O_(4)^(2-)+H^(+)tooverset(+7)(Mn)O_(4)^(-)+overset(+4)(Mn)O_(2)`
Hence eq. wt. of `MnO_(4)^(2-)=(119xx3)/2=178.5`