Advertisements
Advertisements
प्रश्न
Write a balanced equation for the following conversion:
\[\ce{CuSO4 ->[A]Cu(OH)2 ->[B] [Cu(NH3)4]SO4}\]
उत्तर
\[\ce{\underset{Blue}{CuSO4} + 2NH4OH -> \underset{NH4OH ppt.dissolves}{\underset{Pale blue ppt. with excess}{Cu(OH)2\downarrow}} + (NH4)2SO4}\]
\[\ce{Cu(OH)2 + (NH4)2SO4 + 2NH4OH -> \underset{Tetraammine copper (II) sulphate}{\underset{deep blue solution}{[Cu(NH3)4]SO4}} + 4H2O}\]
APPEARS IN
संबंधित प्रश्न
State your observations when Barium chloride solution is mixed with Sodium Sulphate Solution.
Match the salts given in Column I with their method of preparation given in Column II
| Column I | Column II | ||
| 1 | Pb(NO3)2 from PbO | A | Simple displacement |
| 2 | MgCl2 from Mg | B | Titration |
| 3 | FeCl3 from Fe | C | Neutralization |
| 4 | NaNO3 from NaOH | D | Precipitation |
| 5 | ZnCO3 from ZnSO4 | E | Combination |
State your observation When excess sodium hydroxide is added to calcium nitrate solution
Choose the correct answer from the options given below :
Sodium zincate (Na2ZnO2) is
You are given a mixture of precipitated copper hydroxide and zinc hydroxide. Name a solvent which will dissolve:
Both copper hydroxide and zinc hydroxide
How will the action of dilute hydrochloric acid on sodium carbonate and sodium sulphite enables you to distinguish between these two compounds?
What do you understand by amphoteric oxide?
Write a balanced equation for the following conversion:
\[\ce{ZnSO4 ->[A]Zn(OH)2->[B]Na2ZnO2}\]
When an ammonium salt is warmed with sodium hydroxide solution, a gas is evolved. State three ways in which you could identify this gas.
Write a balanced equation of a coloured metallic oxide which dissolves in alkalis to yield colourless solutions.
