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प्रश्न
Give one example of a salt which gives an aqueous solution having:
pH less than 7
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उत्तर
Ammonium chloride (NH4Cl)
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संबंधित प्रश्न
Write a balanced equation for the preparation of the following salts:
Copper sulphate from copper carbonate.
What are the two main ways in which common salt (sodium chloride) occurs in nature?
Give any two uses of common salt (sodium chloride).
Common salt is obtained from sea-water by the process of ______.
How would you show that blue copper sulphate crystals contain water of crystallisation?
The salt whose aqueous solution will have no effect on either red litmus or blue litmus is ______.
The aqueous solution of one of the following salts will turn phenolphthalein indicator pink. This salt is:
The metal salt A is blue in colour. When salt A is heated strongly over a burner, then a substance B is eliminated and a white powder C is left behind. When a few drops of a liquid D are added to powder C, it becomes blue again. What could be A, B, C and D?
Consider the following salts:
Na2CO3, NaCl, NH4Cl, CH3COONa, K2SO4, (NH)2SO4
Which of these salts will give:
- acidic solutions?
- neutral solutions?
- basic solutions (or alkaline solutions)?
Explain ‘salt hydrolysis’
name two salts which are acidic.
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?
Name two carbonates which do not produce carbon dioxide on heating.
Distinguish by a chemical test sodium chloride and sodium sulphide.
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.
Which of the following is not an acidic salt?
A salt that is formed by the complete neutralization of an acid and a base is called ______ salt.
How is normal salt obtained? Give a suitable reaction.
