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Question
In certain reaction an insoluble solid called precipitate is formed. State the colour and name of the precipitate formed in the following reaction involving addition of:
Iron [II] sulphate to sodium hydroxide.
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Solution
Iron [II] sulphate and sodium hydroxide
\[\ce{FeSO4 + 2NaOH -> Na2SO4 + \underset{\text{Iron[II] hydroxide}}{Fe(OH)2↓}}\]
The precipitate formed is Iron [II] hydroxide which is dirty green in colour.
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