Advertisements
Advertisements
प्रश्न
Name a salts whose solubility increases with temperature.
उत्तर
Potassium bromide and potassium chloride
APPEARS IN
संबंधित प्रश्न
State what would you observe when Washing Soda Crystals are exposed to the atmosphere
The pH of a salt used to make tasty and crispy pakoras is 14. Identify the salt and write a chemical equation for its formation. List its two uses.
State one relevant observation for the following:
Anhydrous calcium chloride is exposed to air for some time.
Which of the following salt has a blue colour and why?
CuSO4.5H2O or CuSO4
Name three chemicals made from common salt (or sodium chloride).
What name is given to the common salt which is mined from underground deposits? How was this salt formed?
The aqueous solution of one of the following salts will turn phenolphthalein indicator pink. This salt is:
(a) KCl
(b) K2SO4
(c) K2CO3
(d) KNO3
A salt X when dissolved in distilled water gives a clear solution which turns red litmus blue. Explain the phenomenon.
Define the following term: Efflorescence.
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 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.
