Why is CH3I have a higher boiling point than CH3Cl?
I thought, since Cl is more electronegative, it withdraws more electron density to its part and hence increase dipole movement within the atom and hence, requiring more energy to split them up and that implies higher boiling point for CH3Cl.
3 answers
Boiling points depend more upon the INTERmolecular forces than they do on INTRAmolecular forces. Boiling points depend upon both the forces between molecules AND the molar mass of the compound. You are correct that the CH3Cl bond should be stronger than the CH3I bond but the boiling point of CH3I is higher because the molar mass of CH3I is higher.
First, is that Cl is more electronegative than Br , so it dipole moment increases then it requires more energy to split. So it have a high boiling point.
Second, it depends on the molar mass. So greater is the molar mass , more energy is required , so more is boiling point.
Second, it depends on the molar mass. So greater is the molar mass , more energy is required , so more is boiling point.
As ch3i has greater surface area and also it has greater molar mass so it has more van der waal forces of attraction
Which results in increase in energy and thus it's b. Point is higher
Which results in increase in energy and thus it's b. Point is higher
2 answers