When fe(no3)2(aq) and na2s(aq) are mixed, what is the black coloured precipitate that forms?

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10-10-2017
Chemistry

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When fe(no3)2(aq) and na2s(aq) are mixed, what is the black coloured precipitate that forms?

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Erudite1 Erudite1 · Answer 1 · 2017-10-17T23:00:38+02:00

Erudite1 Erudite1

17-10-2017

The black coloured precipitate that form is IRON ll SULPHIDE, FeS.
Iron sulphide ll sulphide is black in colour and is insoluble in water. It possess very high melting temperature and react in acids. Iron ll sulphide is used as pigment in hair dyes, glasses, bottles and paints. It is also used as lubricant.

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