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प्रश्न
State one relevant observation for the following:
To the copper nitrate solution, initially, few drops of sodium hydroxide solution is added and then added in excess.
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उत्तर
Sodium hydroxide reacts with copper nitrate to produce a sodium nitrate solution and a blue-colored precipitate copper hydroxide.
\[\ce{Cu(NO3)2 + 2NaOH -> Cu(OH)2 + 2NaNO3}\]
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संबंधित प्रश्न
Name the kind of particles present in sodium hydroxide solution.
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.
Name the chloride of a metal which is soluble in excess of ammonium hydroxide. Write equation for the same.
Using sodium hydroxide solution, how will you distinguish:
Lead hydroxide from magnesium hydroxide.
Sodium hydroxide solution is added to solution A. A white precipitate is formed which is soluble in excess sodium hydroxide. Name the metal ion present in A.
Identify the substance Q based on the information given below:
The white crystalline solid Q is soluble in water. It liberates a pungent smelling gas when heated with sodium hydroxide solution.
Using Sodium hydroxide solution, how would you distinguish: Ammonium sulphate from sodium sulphate.
Sodium hydroxide solution is added first in a small quantity, then in excess to the aqueous salt solutions of copper (II) sulphate, zinc nitrate, lead nitrate, calcium chloride, and iron (III) sulphate. Copy the following table and write the colour of the precipitate in (i) to (v) and the nature of the precipitate (soluble or insoluble) in (vi) to (x).
| Aqueous salt solution | Colour of precipitate when NaOH is added in a small quantity | Nature of precipitate (soluble or insoluble) when NaOH is added in excess |
| Copper (II) sulphate | (i) | (vi) |
| Zinc nitrate | (ii) | (vii) |
| Lead nitrate | (iii) | (viii) |
| Calcium chloride | (iv) | (ix) |
| Iron (III) Sulphate | (v) | (x) |
Distinguish by adding:
Sodium hydroxide solution and ammonium hydroxide solution to ferrous nitrate and lead nitrate.
What is observed when hot, concentrated caustic soda solution is added to zinc? Write a balanced equation.
