Question

A scarlet compound (a) is treated with conc. Hno3 to give a black precipitate (b) and a colourless solution of
c. On adding ki to this solution, a yellow . (d) is obtained. The precipitate (b) on warming with conc. Hno3 in the presence of mn(no3)2 produces a light pink coloured solution due to the formation of (e). What is (e)?

Answer 1

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