Advertisements
Advertisements
प्रश्न
Give a chemical test to distinguish between the given pairs of chemicals:
Lead nitrate solution and Zinc nitrate solution
Advertisements
उत्तर
Lead nitrate and Zinc nitrate solution can be distinguished by passing H2S in solution
`Pb(NO_3)_2` will give the black precipitate of PbS whereas `Zn(NO_3)_2`will not.
`Pb^2+ + H_2S -> PbS↓ + 2H^(+)`
APPEARS IN
संबंधित प्रश्न
A compound X (having the vinegar-like smell) when treated with ethanol in the presence of the acid Z, gives a compound Y which has a fruity smell.
The reaction is:
1) Identify Y and Z.
2) Write the structural formula of X.
3) Name the above reaction.
Name a metallic oxide soluble in excess of caustic soda solution.
Name a weak alkali.
Name two colourless metal ions.
Name: A metallic oxide soluble in excess of caustic soda solution.
Name a coloured metallic oxide which dissolves in alkalis to yield colourless solutions.
Name a compound containing zinc in the anion.
When ammonium hydroxide is added to solution B, a pale blue precipitate is formed. This pale blue precipitate dissolves in excess ammonium hydroxide to give an inky blue solution. Name the cation present in solution B. What is the probable colour of solution B?
What do you see when sodium hydroxide solution is added to zinc sulphate solution, till it is in excess?
Why the alkali is added drop by drop to the salt solution?
