Select the correct option

Options

A. Entropy is function of temperature and also entropy change is function of temperature.
B. Entropy is a function of temperature & entropy change is not a function of temperature.
C. Entropy is not a function of temperature & entropy change is a function of temperature
D. Both entropy & entropy change are not a function of temperature

Answer

To solve the question regarding the relationship between entropy and temperature, let's break down the information step by step.

### Step-by-Step Solution:

1. **Understanding Entropy**:
- Entropy (S) is a measure of randomness or disorder in a system.
- It reflects how spread out or dispersed the energy of a system is.

2. **Entropy in Different States of Matter**:
- In solids, particles are closely packed and have minimal movement, leading to low entropy.
- In liquids, particles are less tightly packed and can move more freely, resulting in higher entropy than solids.
- In gases, particles are far apart and move freely, leading to the highest entropy.

3. **Entropy as a Function of Temperature**:
- The randomness of particles increases with temperature. Higher temperatures provide more kinetic energy, allowing particles to move more freely.
- Therefore, entropy (S) can be expressed as a function of temperature.

4. **Entropy Change (ΔS)**:
- The change in entropy (ΔS) can be defined as the difference in entropy between two states (S2 - S1).
- This change in entropy is also dependent on temperature, as it relates to the heat transfer (ΔQ) divided by temperature (T).
- Thus, ΔS can also be considered a function of temperature.

5. **Evaluating the Options**:
- Option 1: "Entropy is a function of temperature and also entropy change is a function of temperature."
- This is true based on our understanding.
- Option 2: "Entropy is a function of temperature and entropy change is not a function of temperature."
- This is false.
- Option 3: "Entropy is not a function of temperature and entropy change is a function of temperature."
- This is false.
- Option 4: "Both entropy and entropy change are not a function of temperature."
- This is false.

6. **Conclusion**:
- The correct option is **Option 1**: "Entropy is a function of temperature and also entropy change is a function of temperature."