Compound Melting point (°C) | AHfus (kJ/mol) | Boiling point (°C) | AHvap (kJ/mol) HF -83.11 4.577 19.54 25.18 HCI -114.3 1.991 -84.9 17.53 HBr -86.96 2.406 -67.0 19.27 HI -50.91 2.871 -35.38 21.16 Jsing the data in the table, calculate ASfus and ASvap for HCI. ASfus J/(K · mol) ASvap = J/(K · mol) Determine the entropy change when 7.90 mol HCl(g) condenses at atmospheric pressure. AS = J/K
States of Matter
The substance that constitutes everything in the universe is known as matter. Matter comprises atoms which in turn are composed of electrons, protons, and neutrons. Different atoms combine together to give rise to molecules that act as a foundation for all kinds of substances. There are five states of matter based on their energies of attraction, namely solid, liquid, gases, plasma, and BEC (Bose-Einstein condensates).
Chemical Reactions and Equations
When a chemical species is transformed into another chemical species it is said to have undergone a chemical reaction. It consists of breaking existing bonds and forming new bonds by changing the position of electrons. These reactions are best explained using a chemical equation.
![### Phase Transition Calculations for Hydrogen Halides
#### Table: Thermodynamic Data for Hydrogen Halides
| Compound | Melting point (°C) | ΔH_fus (kJ/mol) | Boiling point (°C) | ΔH_vap (kJ/mol) |
| -------- | ------------------ | --------------- | ------------------ | --------------- |
| HF | -83.11 | 4.577 | 19.54 | 25.18 |
| HCl | -114.3 | 1.991 | -84.9 | 17.53 |
| HBr | -86.96 | 2.406 | -67.0 | 19.27 |
| HI | -50.91 | 2.871 | -35.38 | 21.16 |
#### Calculation Tasks:
Using the data in the table, calculate the entropy changes for the fusion (ΔS_fus) and vaporization (ΔS_vap) of HCl.
1. **Calculation of \(\Delta S_{fus}\)**
\[ \Delta S_{fus} = \quad \text{\_\_\_\_\_\_} \quad \text{J/(K · mol)} \]
2. **Calculation of \(\Delta S_{vap}\)**
\[ \Delta S_{vap} = \quad \text{\_\_\_\_\_\_} \quad \text{J/(K · mol)} \]
3. **Determine the entropy change when 7.90 mol HCl(g) condenses at atmospheric pressure.**
\[ \Delta S = \quad \text{\_\_\_\_\_\_} \quad \text{J/K} \]
### Detailed Graph/Diagram Explanation:
**Explanation of the Table:**
The table lists thermodynamic data for four hydrogen halides (HF, HCl, HBr, and HI). The properties listed include:
- **Melting Point (°C)**: The temperature at which the compound transitions from solid to liquid.
- **Enthalpy of Fusion (ΔH_fus, kJ/mol)**: The heat required to convert one mole of solid to liquid at its melting point.
- **Boiling Point (°C)**: The temperature at which the compound transitions from liquid to gas.
- **Enthalpy of Vaporization (](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2Ff00f8b75-2bac-4335-a200-62a4fa07a89d%2Fc0d7fce7-6a83-4dd9-adc0-2a6f8cb4656f%2F72luigd_processed.png&w=3840&q=75)
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