Advertisements
Advertisements
प्रश्न
Using Sodium hydroxide solution, how would you distinguish: Zinc nitrate solution from calcium nitrate solution.
Advertisements
उत्तर
Sodium hydroxide reacts with zinc nitrate and zinc hydroxide is formed which is soluble in excess of sodium hydroxide
\[\ce{Zn(NO3)2(aq) + 2NaOH(aq) -> Zn(OH)2(s) + 2NaNO3(aq)}\]
Sodium hydroxide reacts with calcium nitrate and forms white ppt. of calcium hydroxide which is insoluble in excess of sodium hydroxide.
\[\ce{Ca(NO3)2 + 2NaOH -> Ca(OH)2 + 2NaNO3}\]
APPEARS IN
संबंधित प्रश्न
Using sodium hydroxide solution, how will you distinguish: Zinc nitrate solution from calcium nitrate solution
Using sodium hydroxide solution, how will you distinguish:
Iron (II) chloride from iron (III) chloride
Using sodium hydroxide solution, how will you distinguish:
Lead hydroxide from magnesium hydroxide.
State what do you observe when:
Neutral litmus solution is added to alkaline 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) |
State your observation of the following case :
When excess sodium hydroxide is added to calcium nitrate solution
Write balanced equation reaction of sodium hydroxide solution with iron (III) chloride solution.
Distinguish by adding:
Sodium hydroxide solution and ammonium hydroxide solution to Fe(II) salt solution and Fe(III) salt solution.
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.
