Boiling Point Vs Volatility

The boiling point of a substance is the temperature at which its vapor pressure equals the external pressure surrounding the liquid, causing it to change from a liquid to a gas. At this temperature, the molecules within the liquid have enough energy to overcome intermolecular forces, allowing them to escape into the air as vapor. The boiling point varies with changes in atmospheric pressure; for instance, water boils at 100 degrees Celsius at sea level but at lower temperatures at higher altitudes due to reduced pressure.

Volatility refers to the tendency of a substance to vaporize, which is often indicated by its boiling point. A volatile substance has a higher vapor pressure at a given temperature, meaning it can evaporate easily. Factors influencing volatility include molecular weight, intermolecular forces, and temperature; substances with weaker intermolecular forces or lower molecular weights tend to be more volatile. For example, substances like gasoline are highly volatile, allowing them to readily evaporate and form vapors at room temperature.