Advertisements
Advertisements
प्रश्न
Give an example with a balanced equation, of the following reaction:
exothermic reaction
उत्तर
Example of exothermic reaction:
(i) \[\ce{N2 + 3H2⇌[\Delta]2NH3 + Heat}\]
(ii) \[\ce{4NH3 + 5O2->[\Delta]4NO + 6H2O + \Delta T}\]
APPEARS IN
संबंधित प्रश्न
FILL IN THE BLANK
In a................ reaction heat energy is absorbed.
State the effects of endothermic and exothermic reactions on the surroundings.
Chemical reactions may proceed with evolution of heat. Give an example.
Chemical reactions may proceed with absorption of heat. Give an example.
Write an Explanation.
Endothermic reaction
True or False. If false, give the correct answer.
Tarnishing of silver is an example of endothermic change.
Mention any two exothermic reactions.
The Dissolution of glucose in water is also an ______ change.
Match the following:
Colum I | Column II | ||
1. | Alloying | a. | Exothermic change |
2. | Crystallization | b. | Periodic change |
3. | Soap powder + water | c. | Mixing of molten solids |
4. | Seasonal changes | d. | Pure solid |
Give scientific reason.
While preparing dilute sulphuric acid from concentrated sulphuric acid in the laboratory, the concentrated sulphuric acid is added slowly to water with constant stirring.