Advertisements
Advertisements
Question
Write a balanced equation for the preparation of the following salts:
Copper sulphate from copper carbonate.
Advertisements
Solution
\[\ce{CuCO3 + H2SO4 -> CuSO4 + H2O + CO2}\]
RELATED QUESTIONS
Name the salt which is used as a preservative in pickles, and in curing meat and fish.
The aqueous solution of one of the following salts will turn phenolphthalein indicator pink. This salt is:
Name the particles present in :
Strong electrolyte
Taking sodium carbonate as an example, give the meaning of the following terms:
Water of crystallization
State what would you observe when :
Washing soda crystals are exposed to the atmosphere.
Name the anion present in the following compound:
Compound A, when warmed with concentrated sulphuric acid, gives a gas which fumes in moist air and which gives dense white fumes with ammonia.
Copy and complete the following table which refers to the action of heat on some carbonates:
| Carbonate | Colour of residue on cooling |
| Zinc Carbonate | |
| Lead carbonate | |
| Copper carbonate |
Salts A, B, C, D and E undergo reactions (i) to (v) respectively. Identify the anion present in these salts on the basis of these reactions.
- When silver nitrate solution is added to a solution of A, a white precipitate, insoluble in dilute nitric acid, is formed.
- The addition of dilute hydrochloric acid to B produces a gas which turns lead acetate black on paper.
- When a freshly prepared solution of ferrous sulphate is added to a solution of C and concentrated sulphuric acid is gently poured from the side of the test tube, a brown ring is formed.
- When dilute sulphuric acid is added to D, a gas is produced which turns acidified potassium dichromate solution from orange to green.
- The addition of dilute hydrochloric acid to E produces effervescence. The gas produced turns lime water milky but does not affect acidified potassium dichromate solution.
The acid reacts with a base to form a neutral product called ______.
What are hygroscopic substances?
