In the titration of `K_(2)Cr_(2)O_(7)` and `FeSO_(4)`, the following data is obtained : `V_(1) mL " of " 1M_(1) K_(2)Cr_(2)O_(7)` requires `V_(2) mL " of " 1M_(2) FeSO_(4)`. Which of the following relations is true for the above titration ?

Options

A. `6 M_(1)V_(1)=M_(2)V_(2)`
B. `M_(1)V_(1)=6M_(2)V_(2)`
C. `M_(1)V_(1)=M_(2)V_(2)`
D. `3M_(1)V_(1)=4M_(2)V_(2)`

Answer

A

Explanation

`K_(2)Cr_(2)O_(7)+7H_(2)SO_(4)+6FeSO_(4) to K_(2)SO_(4) +Cr_(2)(SO_(4))_(3)+3Fe_(2)(SO_(4))_(3)+7H_(2)O`
`(M_(1)V_(1))/(n_(1))(K_(2)Cr_(2)O_(7))=(M_(2)V_(2))/(n_(2))(FeSO_(4))`
`(M_(1)V_(1))/(1)=(M_(2)V_(2))/(6)`
`6M_(1)V_(1)=M_(2)V_(2)`