Advertisements
Advertisements
प्रश्न
How is the concentration of hydroxide ions (OH−) affected when excess base is dissolved in a solution of sodium hydroxide?
उत्तर
The concentration of hydroxide ions (OH−) would increase when excess base is dissolved in a solution of sodium hydroxide.
APPEARS IN
संबंधित प्रश्न
From which plant is litmus paper or litmus solution obtained?
- Moss
- Rose
- Hibiscus
- Lichen
Write a word equation and then a balanced equation for the reaction taking place when:
Dilute hydrochloric acid reacts with magnesium ribbon.
Complete and balance the followingchemicalequations:
NaHCO3 (S) + HCI (aq) →
On adding dilute hydrochloric acid to copper oxide powder, the solution formed is blue-green.
Predict the new compound formed which imparts a blue-green colour to solution.
On adding dilute hydrochloric acid to copper oxide powder, the solution formed is blue-green.
On the basis of the above reaction, what can you say about the nature of copper oxide?
What ions are present in the solutions of following substances? (write the symbols only)
Hydrochloric acid
What ions are present in the solutions of following substances? (write the symbols only)
Sulphuric acid
What ions are present in the solutions of following substances? (write the symbols only)
Magnesium hydroxide
Wasp stings can be treated with:
(a) baking soda
(b) vinegar
(c) washing soda
(d) milk of magnesia
What is the chemical formula of washing soda?
Write the chemical formula of soda ash?
State two uses each of the following compounds:
Sodium hydroxide
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?
If a few drops of a concentrated acid accidentally spills over the hand of a student, what should be done?
Are all acids corrosive in nature? Name a few acids which are non-corrosive and may be part of our food.
The taste of acid is ______.
The metal that will not produce hydrogen gas when reacted with dilute acids.
For each of the salt: A, B, C and D, suggest a suitable method of its preparation.
C is a soluble salt of copper.