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प्रश्न
Write the observation for the following:
NaOH is added drop-wise till in excess to a solution of zinc sulphate.
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उत्तर
When NaOH is added drop-wise to a solution of zinc sulphate, then the following reaction takes place:
\[\ce{ZnSO4 + 2NaOH -> \underset{\text{White gelatinous ppt.}}{Zn(OH)2 v + Na2SO4}}\]
When NaOH becomes in excess, then the following reaction takes place:
\[\ce{Zn(OH)2 + 2NaOH -> \underset{\text{Colourless}}{Na2ZnO2} + 2H2O}\]
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संबंधित प्रश्न
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
What happens when ammonia solution is added first dropwise and then in excess to the following solution:
ZnSO4
Write a balanced equation for this reaction.
What happens when ammonia solution is added first dropwise and then in excess to the following solution:
FeCl3
Write a balanced equation for this reaction.
Write the observation, and balanced equation for the following reaction:
Excess of ammonium hydroxide is added to a substance, obtained by adding hydrochloric acid to silver nitrate solution.
Identify the cation of the following case:
NaOH solution when added to solution (C) gives white ppt. which insoluble in excess.
The salt solution which does not react with ammonium hydroxide is ______.
Write balanced equation:
Copper sulphate solution with ammonium hydroxide solution.
______ is a white precipitate that is soluble in excess of Ammonium hydroxide solution.
Write balanced equation :
Copper sulphate solution with ammonium hydroxide solution.
Write a balanced equation:
Copper sulphate solution with ammonium hydroxide solution.
