Which solution can serve as both reactant and indicator when it is used in redox titrations ?
A. `FeNH_(4)(SO_(4))_(2)`
B. `KMnO_(4)`
C. `H_(2)C_(2)O_(4)`
D. `Na_(2)S_(2)O_(3)`
A. `FeNH_(4)(SO_(4))_(2)`
B. `KMnO_(4)`
C. `H_(2)C_(2)O_(4)`
D. `Na_(2)S_(2)O_(3)`
Correct Answer – b