Endothermic Vs Exothermic
Which change is typically endothermic?
Select the correct option:
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About This Question
- Subject
- chemistry
- Chapter
- chemical thermodynamics
- Topic
- endothermic vs exothermic
- Difficulty
- Easy
- Year
- 2025
Solution
- Endothermic Process: A process that absorbs heat from the surroundings (ΔH>0).
- Salts: The dissolution of Ammonium Nitrate (NH4NO3) in water absorbs significant heat due to the lattice energy overcoming the hydration energy inefficiently.
- Application: This is why NH4NO3 is used in instant cold packs.
- Exothermic checks:
- Combustion: Burning fuel always releases heat.
- Water formation: Highly explosive and exothermic.
- Neutralization: Mixing acid and base always gets warm because bonds are forming (H++OH−→H2O).
This easy difficulty chemistry question is from the chapter chemical thermodynamics, covering the topic of endothermic vs exothermic. It appeared in the 2025 exam.
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