Arrange the following in the increasing order of boiling point 1.ch3br 2.ch3cl.3.chbr3.4.ch2cl2
Super
To arrange the given compounds in increasing order of boiling point, we need to consider their molecular weights and the strength of intermolecular forces.
1. CH3Cl (molecular weight = 50.49 g/mol) - This compound has a lower molecular weight and primarily exhibits weak van der Waals forces between its molecules.
2. CH2Cl2 (molecular weight = 84.93 g/mol) - This compound has a higher molecular weight compared to CH3Cl and, therefore, exhibits stronger van der Waals forces.
3. CH3Br (molecular weight = 94.94 g/mol) - This compound has a higher molecular weight compared to CH2Cl2 and, therefore, exhibits stronger van der Waals forces.
4. CHBr3 (molecular weight = 173.83 g/mol) - This compound has the highest molecular weight among the given compounds and, as a result, exhibits the strongest van der Waals forces.
So, the increasing order of boiling point is: CH3Cl < CH2Cl2 < CH3Br < CHBr3.
To arrange these compounds in increasing order of boiling point, we need to consider their molecular structures and intermolecular forces.
1. CH3Br (methyl bromide) - This compound has a relatively low boiling point compared to the others due to weak van der Waals forces between the molecules. The dipole-dipole interactions in methyl bromide are weaker than in some of the other compounds.
2. CH3Cl (methyl chloride) - Methyl chloride also has relatively weak van der Waals forces, resulting in a low boiling point. However, it is slightly higher than methyl bromide due to the increased electronegativity of chlorine compared to bromine.
3. CHBr3 (bromoform) - Bromoform has higher boiling points compared to both methyl bromide and methyl chloride due to the increased molecular size. As the size increases, the van der Waals forces also increase, requiring more energy to overcome them.
4. CH2Cl2 (dichloromethane) - Dichloromethane has the highest boiling point among these compounds. This is primarily because of its dipole-dipole interactions, which contribute significantly to its intermolecular forces. Additionally, the molecular size of dichloromethane is intermediate compared to the others, resulting in stronger van der Waals forces.
So, the increasing order of boiling points is:
1. CH3Br
2. CH3Cl
3. CHBr3
4. CH2Cl2