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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
How will you distinguish between Ammonium hydroxide and Sodium hydroxide using copper sulphate solution?
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.
Name the metal hydroxides which are insoluble in ammonium hydroxide solution.
Name the method used for preparation of the following salt from the list given below:
Zinc ion and Lead ion.
Choose the correct answer from the options given below :
Which salt solution is soluble in excess of NH4OH
State what do you observe when:
Ammonium hydroxide is added to iron (III) sulphate solution.
Choose the correct answer from the options given below :
A chloride which forms a precipitate that is soluble in excess of ammonium hydroxide is :
How would you distinguish between Zn2+ and Pb2+ using ammonium hydroxide solution?
Write the observation for the following :
NH4OH is added first in a small quantity and then in excess to a solution of copper sulphate.
Write balanced equation copper sulphate solution with ammonium hydroxide solution.
