Advertisements
Advertisements
Question
Taking sodium carbonate as an example, give the meaning of the following terms: Water of crystallization.
Solution
Water of crystallization: It is the fixed amount of water that is present in a crystal as an integral pat of its constitution. Compounds having water of crystallization are called hydrous salts.
For example: Sodium carbonate Na2CO3 has 10 molecules of water present as water of crystallization Na2CO3.10H2O
APPEARS IN
RELATED QUESTIONS
Which of the following salt has a blue colour and why?
CuSO4.5H2O or CuSO4
The products of chlor-alkali process are:
(a) NaCl, Cl2 and H2
(b) H2, Cl2 and NaOH
(c) Cl2, Na2CO3 and H2O
(d) NaOH, Cl2 and HCl
P and Q are aqueous solutions of sodium chloride and sodium hydroxide, respectively. Which of these will turn:
red litmus blue?
Explain ‘salt hydrolysis’
Hard water required for an experiment is not available in a school laboratory. However, following salts are available in the laboratory. Select the salts which may be dissolved in water to make it hard for the experiment.
|
(1) |
Calcium Sulphate |
(2) |
Sodium Sulphate |
|
(3) |
Calcium Chloride |
(4) |
Potassium Sulphate |
|
(5) |
Sodium Hydrogen Carbonate |
(6) |
Magnesium Chloride |
(A) 1, 2 and 4
(B) 1, 3 and 6
(C) 3, 5 and 6
(D) 2, 4 and 5
Define the following term: Hygroscopy.
Define the following term : Water of crystallization
Give four substances which contain water of crystallization and write their common name.
Salt which is formed by the partial replacement of hydrogen ions of an acid by a metal is called ______.
What are hygroscopic substances?
