What would be observed when the boiling point of chlorine is lower than that of iodine
If the boiling point of chlorine is lower than that of iodine, it means that chlorine molecules have weaker intermolecular forces of attraction than iodine molecules. As a result, the chlorine molecules would require less energy to break the bonds between them and transition from a liquid to a gas. Consequently, when the two elements are heated in a container, the chlorine would boil off and evaporate first, followed by the iodine at a higher temperature. Therefore, the observed phenomenon would be that chlorine would boil and evaporate before iodine does.
When the boiling point of chlorine (Cl2) is lower than that of iodine (I2), the following observations can be made:
1. Boiling Points: Chlorine will boil at a lower temperature compared to iodine. The boiling point of chlorine is -34.04 degrees Celsius (-29.27 degrees Fahrenheit), whereas the boiling point of iodine is 184.3 degrees Celsius (363.74 degrees Fahrenheit).
2. Vapor: Chlorine will rapidly evaporate and form a greenish-yellow gas at room temperature, even before reaching its boiling point. This is due to its relatively low boiling point and high vapor pressure.
3. Iodine: Iodine, on the other hand, will remain in its solid state at room temperature and under normal atmospheric pressure. It will not readily evaporate unless heated to its higher boiling point.
4. Volatility: Chlorine is more volatile than iodine due to its lower boiling point. This means that chlorine will have a higher tendency to evaporate and form gas particles in the air, while iodine will remain mostly in its solid state unless heated.
5. Odor and Color: Chlorine has a strong, suffocating odor and appears as a greenish-yellow gas. Iodine has a characteristic odor and appears as dark violet crystals or a purple vapor when heated to its boiling point.
In summary, when the boiling point of chlorine is lower than that of iodine, chlorine will exist as a greenish-yellow gas at room temperature, while iodine will remain as solid crystals unless heated to its higher boiling point.