Advertisements
Advertisements
प्रश्न
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)?
Advertisements
उत्तर
- The salt solutions of NH4Cl and (NH4)2SO4 are acidic.
- The salt solutions of NaCl and K2SO4 are neutral.
- The salt solutions of CH3COONa and Na2CO3 are basic.
APPEARS IN
संबंधित प्रश्न
Give one word or a phrase:
The property by which certain hydrated salts, when left exposed to atmosphere, lose their water of crystallization and crumble into powder.
Write a balanced equation for the preparation of the following salt:
Zinc carbonate from zinc sulphate.
Write the chemical name and formula of common salt.
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 ______.
What happens when a few drops of water are added to anhydrous copper sulphate? Explain with the help of an equation.
What is a salt?
What is meant by ‘a family of salts’? Explain with examples.
A salt is dissolved in water and the pH of this salt solution is measured with a universal indicator paper. If the pH of solution is less than 7, the salt is most likely to be ______.
P and Q are aqueous solutions of sodium chloride and sodium hydroxide, respectively. Which of these will turn:
- blue litmus red?
- red litmus blue?
State what would you observe when :
Washing soda crystals are exposed to the atmosphere.
State what would you observe when :
The salt ferric chloride is exposed to the atmosphere.
Name a colourless gas which bleaches.
Name gases which has a sour taste.
Distinguish by a chemical test sodium hydroxide solution and ammonium hydroxide solution.
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.
Identify the following substance:
Gas C has an offensive smell like rotten eggs.
The chemical name of plaster of Paris is ______.
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:
Ferric chloride
