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प्रश्न
Give a balanced equation for the following type of reaction:
A catalytic, reversible, exothermic reaction.
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उत्तर
\[\ce{2SO2 + O2⇌[V2O5][450°C]2SO3 + \Delta}\]
\[\ce{N2 + 3H2⇌[Fe][450-500°C]2NH3 + Heat}\]
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संबंधित प्रश्न
State the effect of an exothermic reaction on the surroundings.
MULTIPLE CHOICE QUESTIONS
Tick the most appropriate answer.
Heat energy is evolved in these reactions
- Thermal decomposition reactions
- Exothermic reactions
- Endothermic reactions
- None of these
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.
Identify the endothermic and exothermic reaction.
\[\ce{2KClO_{3(s)}->[\Delta] 2KCl_{(s)} + 3O2}\]
State which type of chemical reaction proceeds with the absorption of heat energy.
Give an example of an endothermic reaction.
Give an example with a balanced equation, of the following reaction:
exothermic reaction
Respiration is a ______ change.
Assertion: A drop of petrol when touched with finger gives a chill feeling.
Reason: The above phenomenon is an endothermic one.
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 |
