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प्रश्न
Using sodium hydroxide solution, how will you distinguish: Zinc nitrate solution from calcium nitrate solution
How will you distinguish calcium nitrate and zinc nitrate solution?
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उत्तर १
Zinc nitrate solution from calcium nitrate solution :
(i) \[\ce{Zn(NO3) + 2NaOH -> Zn(OH)2 + 2NaNO3}\]
On further addition of NaOH, Zn(OH)2 dissolves.
(ii ) \[\ce{Ca(NO3)2 + 2NaOH -> Ca(OH)2 + 2NaNO3}\]
Ca(OH)2 precipitates are sparingly soluble in excess of sodium hydroxide.
उत्तर २
- Adding sodium hydroxide solution to zinc nitrate results in a white precipitate that is soluble in excess sodium hydroxide.
- Adding sodium hydroxide solution to calcium nitrate results in a white precipitate that is insoluble in excess of sodium hydroxide.
Notes
Students should refer to the answer according to their questions
संबंधित प्रश्न
Identify the substance underlined, in the following case:
Cation that does not form a precipitate with ammonium hydroxide but forms one with sodium hydroxide.
What do you observe when caustic soda solution is added to the following solution, first a little and then in excess:
FeCl3
Write a balanced equation for this reaction.
Distinguish by adding:
(a) sodium hydroxide solution and
(b) Ammonium hydroxide solution to
(i) Calcium salt solution and lead salt solution
(ii) Lead salt solution and ferrous salt solution
(iii) copper salt solution and ferrous salt solution
(iv) Fe (II) salt solution and Fe (III) Salt solution
(v) Ferrous nitrate and lead nitrate
What do you observe when ammonium salt is heated with caustic soda solution?
State what do you observe when:
Neutral litmus solution is added to alkaline solution
Write the observation, and balanced equation for the following reaction:
Sodium hydroxide is added dropwise to a solution of zinc sulphate, till it is in excess.
Using Sodium hydroxide solution, how would you distinguish: Zinc nitrate solution from calcium nitrate solution.
Using Sodium hydroxide solution, how would you distinguish: Iron(II) chloride from Iron (III) chloride
State your observation of the following case :
When excess sodium hydroxide is added to calcium nitrate solution
Distinguish by adding:
Sodium hydroxide solution and ammonium hydroxide solution to copper salt solution and ferrous salt solution.
