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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
Name a colourless cation not a representative element.
Write the probable colour of the following salts:
Calcium carbonate
Name the probable cation present in each of the following solution:
Yellow coloured solution
Write the colour of the following salt : Cupric salts.
Write the colour of the following salt : Aluminium salts.
Write the colour of the following salt : Ferric salts.
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'.
Write balanced equation for the following reaction:
Zinc and sodium hydroxide solution
Name the probable cation present based on the following observation:
White precipitate insoluble in NH4OH but soluble in NaOH.
Name :
a coloured metallic oxide which dissolves in alkalis to yield colourless solutions.
