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प्रश्न
Taking sodium carbonate as an example, give the meaning of the following terms:
Anhydrous
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उत्तर
Hydrous salt on heating lose their water of crystallization, such salts are then called anhydrous.
For example: Na2CO3.10H2O on losing 10 molecules of water forms Na2CO3.
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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
Complete and balance the following chemical equation:
\[\ce{NaCl_{(aq)} + H2O_{(l)} ->[Electricity]}\]
Name three products of the chlor-alkali process. State two uses of each of these products.
What is a salt?
A salt X when dissolved in distilled water gives a clear solution which turns red litmus blue. Explain the phenomenon.
You are asked to prepare hard water in your laboratory. Select a group from the following groups of salts, any salt of which you may dissolve in distilled water to obtain hard water.
(A) NaCl; Na2SO4; KCl
(B) NaCl; CaCl2; KCl
(C) CaCl2; CaSO4; MgSO4
(D) Na2SO4; CaSO4; MgSO4
The pH values of three solutions A, B and C are given in the table. Answer the following questions:
| 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?
Give four substances which contain water of crystallization and write their common name.
Taking sodium carbonate as an example, give the meaning of the following terms:
Water of crystallization
You are provided with the list of chemicals mentioned below in the box:
| Sodium hydroxide solution, copper carbonate, zinc, hydrochloric acid, copper, dilute sulphuric acid, chlorine, iron |
Using suitable chemicals from the list given, write a balanced chemical equation for the preparation of the salt mentioned below:
Copper sulphate
