Laws of Thermodynamics
Asked by Neha PL · 2 years ago
What are the three laws of thermodynamics and how do they relate to chemical reactions?
1 Answer
The three laws of thermodynamics are:
1. First Law: Energy can neither be created nor destroyed, only converted from one form to another.
- In chemical reactions, this law is applied through the concept of enthalpy change.
2. Second Law: The entropy of an isolated system always increases.
- This law introduces the concept of spontaneity in chemical reactions.
3. Third Law: The entropy of a perfect crystal at absolute zero is zero.
- This law provides a reference point for calculating absolute entropies.
These laws help predict the feasibility, direction, and extent of chemical reactions.
1. First Law: Energy can neither be created nor destroyed, only converted from one form to another.
- In chemical reactions, this law is applied through the concept of enthalpy change.
2. Second Law: The entropy of an isolated system always increases.
- This law introduces the concept of spontaneity in chemical reactions.
3. Third Law: The entropy of a perfect crystal at absolute zero is zero.
- This law provides a reference point for calculating absolute entropies.
These laws help predict the feasibility, direction, and extent of chemical reactions.
NEET Faculty · 2 years ago
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