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Question
Distinguish between the given pair of compounds using the test given within brackets:
A lead salt and a zinc salt (using excess ammonium hydroxide)
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Solution
\[\ce{Pb(NO3)2 + 2NH4OH -> \underset{Chalky white ppt.}{Pb(OH)2↓} + 2NH4NO3}\]
Insoluble in excess of NH4OH,
\[\ce{ZnSO4 + 2NH4OH -> \underset{White gelatinous ppt.}{Zn(OH)2↓} + (NH4)2SO4}\]
With the excess of NH4OH ppt. dissolves.
\[\ce{Zn(OH)2 + (NH4)2SO4 + 2NH4OH -> \underset{Tetra amine zinc sulphate}{[Zn(NH3)4]SO4} + 4H2O}\]
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RELATED QUESTIONS
State your observations when ammonium hydroxide solution is added drop by drop and then in excess to each of the following solutions :
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Write a balanced equation for this reaction.
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Write the observation for the following:
NaOH is added drop-wise till in excess to a solution of zinc sulphate.
Identify the cation of the following case:
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The metal hydroxide which reacts with both acids and alkalis to form salt and water is ______.
Rita was given an unknown salt for identification. She prepared a solution of the salt and divided it into two parts.
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- To the second part of the salt solution, she added a few drops of silver nitrate solution and obtained a white precipitate.
Name:
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- The anion present in the salt given for identification.
Write balanced equation:
Copper sulphate solution with ammonium hydroxide solution.
Write balanced equation:
Copper sulphate solution with ammonium hydroxide solution.
