Advertisements
Advertisements
प्रश्न
Write the chemical formula of sodium carbonate decahydrate.
उत्तर
The chemical formula of sodium carbonate decahydrate is Na2 CO3.H2O Its common name is washing soda.
APPEARS IN
संबंधित प्रश्न
Why should curd and sour substances not be kept in brass and copper vessels?
Equal lengths of magnesium ribbons are taken in test tubes A and B. Hydrochloric acid (HCl) is added to test tube A, while acetic acid (CH3COOH) is added to test tube B. In which test tube will the fizzing occur more vigorously, and why?
Complete and balance the following chemical equations:
Zn (s) + HCI (aq) →
Which element is common to all acids?
A substance X which is used as an antacid reacts with dilute hydrochloric acid to produce a gas Y which is used in one type of fire-extinguisher. Name the substance X and gas Y. Write a balanced equation for the chemical reaction which takes place.
Is PbO2 a base or not? Comment.
With the help of suitable examples explain the term neutralization and the formation of –
- acidic,
- basic and
- neutral salts
The table given below shows the reaction of a few elements with acids and bases to evolve Hydrogen gas.
| Element | Acid | Base |
| A |
✗
|
✗ |
| B |
✓
|
✓ |
| C | ✓ | ✗ |
| D | ✓ | ✓ |
Which of these elements form amphoteric oxides?
The formula of bleaching powder is ______.
A substance 'X' is used as a building material and is insoluble in water. When it reacts with dil. HCl, it produces a gas which turns lime water milky.
- Write the chemical name and formula of 'X'.
- Write chemical equations for the chemical reactions involved in the above statements.
