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प्रश्न
Sodium hydroxide solution is added to solution A. A white precipitate is formed which is insoluble in excess sodium hydroxide solution. What is the metal ion present in solution A?
Sodium hydroxide solution is added to solution A. A white precipitate is formed which is insoluble in excess sodium hydroxide solution. Name the metal ion present in solution A.
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उत्तर
Calcium [Ca2+]
Explanation:
Calcium ions react with sodium hydroxide to form a white precipitate of calcium hydroxide, which is insoluble in excess sodium hydroxide.
\[\ce{Ca^2+ + 2OH− −>Ca(OH)2}\]
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