Advertisements
Advertisements
Question
Name the method used for preparation of the following salt from the list given below:
Zinc ion and Lead ion.
Advertisements
Solution
Zinc ion and Lead ion.
(i) \[\ce{ZnSO4 + 2NH4OH -> Zn(OH)2 v + (NH4)2SO4}\]
Zn(OH)2 forms white gelatinous precipitates. In the presence of excess of ammonium hydroxide these precipitates get dissolved.
(ii) \[\ce{Pb(NO3)2 + 2NH4OH -> Pb(OH)2 v + 2NH4NO3}\]
Pb(OH)2 forms white precipitates. This precipitate is insoluble in the presence of excess of ammonium hydroxide.
Concept Insight : Ammonium hydroxide forms insoluble hydroxides when treated with certain metallic salt solution. The insoluble hydroxides thus formed get precipitated in the form of a precipitate and may be identified by their distinct colours.
APPEARS IN
RELATED QUESTIONS
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
How will you distinguish between Ammonium hydroxide and Sodium hydroxide using copper sulphate solution?
State your observations when ammonium hydroxide solution is added drop by drop and then in excess to the following solution:
Copper sulphate solution
Using ammonium hydroxide, how would you distinguish between the following pair of ions in solution?
Ferrous ion and Ferric ion.
Choose the correct answer from the options given below :
A chloride which forms a precipitate that is soluble in excess of ammonium hydroxide is :
Write the observation for the following:
Excess NH4OH is added to a substance obtained by adding hydrochloric acid in silver nitrate solution.
Identify the cation in the following case:
Ammonium hydroxide solution when added to Solution B gives a white precipitate which does not dissolve in excess of ammonium hydroxide solution.
The metal hydroxide which reacts with both acids and alkalis to form salt and water is ______.
Write balanced equation:
Copper sulphate solution with ammonium hydroxide solution.
Write balanced equation:
Copper sulphate solution with ammonium hydroxide solution.
