In the following redox reaction,
`xUO^(2+)+Cr_(2)O_(7)^(2-)+yH^(+)toaUO_(2)^(2+)+zCr^(3+)+bH_(2)O`
the value of coefficients x,y and z respectively, are

Options

A. 3,8,2
B. 3,8,7
C. 3,2,4
D. 3,1,8

Answer

A

Explanation

The Balance chemical reaction is as
`3UO^(2+)+Cr_(2)O_(7)^(2-)+8H^(+)to3UO_(2)^(2+)+2Cr^(3+)+4H_(2)O`
Hence, the value of x,y and z are respectively 3,8 and 2.