Cooking oil has a boiling pt of 200 degress, water is 100 degrees. explain theses facts given the strength of waters hydrogen bonds

The molar mass of cooking oil is MUCH high than that of water and the boiling point of water, in theory at least, should be low enough for H2O to be a gas at room temperature. However, the hydrogen bonding is H2O is such a large factor that it actual boils at 100 and not much lower.

The boiling points of liquids are influenced by the strength of the intermolecular forces between their molecules. In the case of water, the boiling point of 100 degrees Celsius is relatively high compared to other similar-sized molecules because of the strong hydrogen bonds between its molecules.

Hydrogen bonding is a special type of intermolecular force that occurs when a hydrogen atom is bonded to a highly electronegative atom, such as oxygen in the case of water. This leads to a partial positive charge on the hydrogen atom and a partial negative charge on the electronegative atom.

These partial charges create attractive forces between neighboring water molecules. The positive end of one water molecule is attracted to the negative end of another, resulting in hydrogen bonding. The strength of these hydrogen bonds plays a significant role in many of water's unique properties, such as its high boiling point.

However, in cooking oil, the molecules do not form strong hydrogen bonds with each other. Instead, the intermolecular forces in cooking oil (which is often composed of nonpolar molecules) are predominantly van der Waals forces, which are weaker than hydrogen bonds. Van der Waals forces are primarily induced by temporary fluctuations in the electron distribution within molecules.

Due to the weaker intermolecular forces in cooking oil caused by the absence of hydrogen bonding, the boiling point of cooking oil (around 200 degrees Celsius) is higher compared to that of water (100 degrees Celsius). This means that cooking oil requires a higher temperature to reach its boiling point and evaporate compared to water.