Advertisements
Advertisements
Question
Using Sodium hydroxide solution, how would you distinguish: Ammonium sulphate from sodium sulphate.
Advertisements
Solution
Ammonium sulphate on reacting with sodium hydroxide liberates ammonia gas:
\[\ce{NH4)2SO4(aq) + 2NaOH(I) -> Na2SO4(aq) + 2NH3(I) + 2H2O(I)}\]
Sodium sulphate on reacting with sodium hydroxide undergoes the following change:
\[\ce{NaOH + Na2SO4 -> NaOH + Na2SO4}\]
However the products would be the same as the reactants, therefore providing no observation for a visible chemical reaction.
APPEARS IN
RELATED QUESTIONS
Name the kind of particles present in sodium hydroxide solution.
What do you observe when ammonium salt is heated with caustic soda 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: Iron(II) chloride from Iron (III) chloride
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) |
Write balanced equation reaction of sodium hydroxide solution with iron (III) chloride solution.
Distinguish by adding:
Sodium hydroxide solution and ammonium hydroxide solution to copper salt solution and ferrous salt solution.
Distinguish by adding:
Sodium hydroxide solution and ammonium hydroxide solution to Fe(II) salt solution and Fe(III) salt solution.
What is observed when hot, concentrated caustic soda solution is added to zinc? Write a balanced equation.
Aqueous lead (II) nitrate can be distinguished from aqueous zinc nitrate by adding any of the following solutions in excess, except:
