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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.
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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.
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संबंधित प्रश्न
Write the probable colour of the following salt:
Calcium salts
Write the probable colour of the following salt:
Iron (III) chloride
Write the probable colour of the following salts:
Calcium carbonate
Name the probable cation present in each of the following solution:
Yellow coloured solution
Fill in the blanks.
Salts of ______ [normal / transition] elements are generally coloured. From the ions K1+, Cr3+, Fe2+, Ca2+, \[\ce{SO^2-_3}\], \[\ce{Mn^1-_4}\],\[\ce{NO^1_3}\] the ions generally coloured are ______.
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'.
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'.
Sodium sulphate solution and sodium chloride solution.
State what do you observe when:
Lead nitrate and sodium chloride are mixed.
Name :
a coloured metallic oxide which dissolves in alkalis to yield colourless solutions.
| 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.
