Question

what is brown ring formation
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Answer 1

Explanation:

A brown ring will form at the junction of the two layers, indicating the presence of the nitrate ion. ... The overall reaction is the reduction of the nitrate ion by iron(II) which is oxidised to iron(III) and formation of a nitrosonium complex where nitric oxide is reduced to NO−.

Answer 2

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A brown ring will form at the junction of the two layers, indicating the presence of the nitrate ion. ... The overall reaction is the reduction of the nitrate ion by iron(II) which is oxidised to iron(III) and formation of a nitrosonium complex where nitric oxide is reduced to NO−.

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