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a colourless solution of compound A gives white precipitate |
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Answer» Aluminum bromide (A) reacts with sodium hydroxide to give a white precipitate of aluminum hydroxide. AlBr 3 +3NaOH→ whiteppt Al(OH) 3 ↓ +3NaBr The precipitate dissolves in excess of NaOH to form sodium meta aluminate which is (C). Al(OH) 3 +NaOH→ sodiummetaaluminate Na[AlO 2 ] +2H 2 O Sodium meta aluminate does not give precipitate with hydrogen sulphide. When sodium meta aluminate is boiled with ammonium chloride, the precipitate of aluminum hydroxide is formed. Aluminum bromide reacts with silver nitrate to form yellow precipitate of silver bromide. AlBr 3 +3AgNO 3 → yellowprecipitate 3AgBr +Al(NO 3 ) 3 |
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