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Question
Choose the correct answer from the options given below:
A chloride which forms a precipitate that is soluble in excess of ammonium hydroxide is:
1) Calcium chloride
2) Ferrous chloride
3) Ferric chloride
4) Copper chloride
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Solution
Copper chloride
CuCl2 + 2NH4OH → Cu(OH)2↓ + 2NH4Cl
With the excess of NH4OH, the ppt. dissolves.
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RELATED QUESTIONS
On adding dilute ammonia solution to a colourless solution of a salt, a white gelatinous precipitate appears. This precipitate however dissolves on addition of excess of ammonia solution. Identify (choose from Na, Al, Zn, Pb, Fe)
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Choose the correct answer from the options given below :
Which salt solution is soluble in excess of NH4OH
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