1.

100 " mL of " `(M)/(10)` `Ca(MnO_(4))_(2)` in acidic medium can be oxidised completely withA. `100 " mL of " 1 M FeSO_(4)` solutionB. `(100)/(3) " mL of " 1 M FeC_(2)O_(4)` solutionC. 25 " mL of " 1 M `K_(2)Cr_(2)O_(7)` solutionD. 75 " mL of " 1 M `C_(2)O_(4)^(2-)` solution

Answer» Correct Answer - A::B
`(10e^(-)+2MnO_(4)^(ɵ)to2Mn^(2+))(n=10)`
(a). `Fe^(2+)toFe^(3+)+e^(-)(n=1)`
m" Eq of "`Ca(MnO_(4))_(2)=100xx(1)/(10)xx10=100`
m" Eq of "`FeSO_(4)=100xx1=100`
(b). `m" Eq of "FeC_(2)O_(4)(n=3),{:[(Fe^(2+)toFe^(+3)+e^(-)),(C_(2)O_(4)^(2-)to2CO_(2)+2e^(-))]:}`
`=(100)/(3)xx3xx1`
`=100=m" Eq of "Ba(MnO_(4))_(2)`
(c). `m" Eq of "K_(2)Cr_(2)O_(7)(n=6)=25xx1xx6=150`
(d). `m" Eq of "C_(2)O_(4)^(2-)(n=2)=75xx2xx1=150`.


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