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प्रश्न
Name three chemicals made from common salt (or sodium chloride).
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उत्तर
Chemicals made from common salt:
- Sodium hydroxide (NaOH), or caustic soda
- Washing soda (Na2CO3.10H2O), or sodium carbonate decahydrate
- Baking soda (NaHCO3), or sodium hydrogen carbonate
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संबंधित प्रश्न
Identify the substance underlined, in the following case
A solid formed by reaction of two gases, one of which is acidic and the other basic in nature
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description is given in the following:
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What happens when copper sulphate crystals are heated strongly? Explain with the help of an equation.
Why is the electrolysis of a concentrated solution of sodium chloride known as chlor-alkali process?
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name two salts which are basic.
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
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| Solution | pH value |
| A | 12 |
| B | 2 |
| C | 7 |
- Which solution will have no effect on litmus solution?
- Which solution will liberate CO2 when reacted with sodium carbonate?
- Which solution will turn red litmus solution blue?
The pH values of three solutions A, B and C are given in the table. Answer the folloiwng questions:
| Solution | pH value |
| A | 12 |
| B | 2 |
| C | 7 |
Which solution will liberate CO2 when reacted with sodium carbonate?
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Hygroscopy
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 |
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Which of the following is not an acidic salt?
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