Question

Small quantities of solutions of compounds TX, TY and TZ are put into separate test tubes containing X, Y and Z solutions. TX does not react with any of these. TY reacts with both X and Z. TZ reacts with X. the decreasing order of oxidation of the anions `X^(-),Y^(-),Z^(-)` is:
A. `Y^(-),Z^(-),X^(-)`
B. `Z^(-),X^(-),Y^(-)`
C. `Y^(-),X^(-),Z^(-)`
D. `X^(-),Z^(-),Y^(-)`

Answer 1

Correct Answer - A
TX does ot ract with any solution. This means that `X^(-)` is least easily oxidized. TY reacts with both X and Z. this means `Y^(-)` is oxidized by both.
`(Y^(-)+XtoY+X^(-),Y^(-)+ZtoY+Z^(-))`
TZ reacts with X only `(Z^(-)+XtoZ+X^(-))`
`Y^(-)`, thus, decreasing order of oxidation of anions `X^(-),Y^(-),Z^(-)` will be : `Y^(-),Z^(-),X^(-)`.