In dilute alkaline solution,`MnO_(4)^(-)` changes to:

In a titration, H_(2)O_(2) is oxidised to O_(2) by MnO_(4)^(-) . 24 mL of 0.1M H_(2)O_(2) requires 16 mL of 0.1M MnO_(4)^(-) solution. Hence MnO_(4)^(-) changes to :

In a titration, H_(2)O_(2) is oxidised to O_(2) by MnO_(4)^(-) . 24 mL of 0.1M H_(2)O_(2) requires 16 mL of 0.1M MnO_(4)^(-) solution. Hence MnO_(4)^(-) changes to :

In alkaline medium, MnO_(4)^(-) oxides I^(-) to -

Assertion : C is -2- butene gives meso-2, 3-butanediol with dilute alkaline KMnO_(4) solution. Reason : Dilute alkaline KMnO_(4) solution gives trans addition with alkenes.

Assertion : cis -2- butene gives meso-2, 3-butanediol with dilute alkaline KMnO_(4) solution. Reason : Dilute alkaline KMnO_(4) solution gives trans addition with alkenes.

Solution of MnO_(4)^(-) is purple-coloured due to :