Advertisements
Advertisements
प्रश्न
One chemical test that would enable you to distinguish between the following pair of chemicals. Describe what happens with each chemical or state 'no visible reaction'.
Calcium nitrate solution and zinc nitrate solution.
Advertisements
उत्तर
Zinc nitrate solution from calcium nitrate solution :
a. \[\ce{ZnNO3 + 2NaOH ->\underset{\text{White gelatinous ppt.}}{Zn(OH)2 + NaNO3}}\]
On further addi tion of NaOH, Zn(OH)2 dissolves.
b. \[\ce{Ca(NO3)2 + 2NaOH ->\underset{\text{White ppt.}}{Ca(OH)2} + 2NaNO3}\]
Ca(OH)2 precipitates are sparingly soluble in excess of sodium hydroxide.
APPEARS IN
संबंधित प्रश्न
Write the probable colour of the following salt:
Ferrous salts
Write the probable colour of the following salt:
Ammonium salts
Name the probable cation present in each of the following solution:
Light blue coloured solution
Write the colour of the following salts: Cuprous salts.
Write the colour of the following salt : Aluminium salts.
Write the colour of the following salt : Ferrous salts.
Write the colour of the following salt : Ferric salts.
Write the observation, and balanced equation for the following reaction:
Moist starch iodide paper is placed at the mouth of a test tube containing chlorine gas.
A metal which produces hydrogen on reacting with alkali as well as with acid.
| Abhishek was given a salt ‘X’ which was white in colour for analysis. On strong heating, it produced a yellow residue, a colourless gas and also a reddish-brown gas. The solution of the salt ‘X’, when tested with an excess of ammonium hydroxide, produced a chalky white insoluble precipitate. |
- Name the coloured gas that evolved when Abhishek heated the salt strongly.
- Which cation was present in the sample given to Abhishek?
- Identify the salt given to Abhishek for analysis.
