Why boiling point of compound is greater?

Large molecules have more electrons and nuclei that create van der Waals attractive forces, so their compounds usually have higher boiling points than similar compounds made up of smaller molecules. ...

1. How do you know which compound has a higher boiling point?
2. What factors affect boiling point of a compound?
3. Why do different compounds have different boiling points?
4. What is high boiling point?
5. What does the boiling point depend on?
6. Why does boiling point increase as carbon chain increases?
7. Why boiling point decreases with decrease in pressure?
8. How does boiling point vary with increase in carbon chain?
9. Does more bonds mean higher boiling point?
10. Why are melting point and boiling point different for the same matter?
11. Why is the boiling point of oil higher than water?
12. Why does boiling point decrease with branching?

How do you know which compound has a higher boiling point?

Compounds with stronger intermolecular forces, larger masses, and less branching will have higher boiling points. Compounds II and III only exhibit intermolecular London dispersion forces, so they would be the two lowest boiling compounds (weakest intermolecular forces).

What factors affect boiling point of a compound?

The relative strength of intermolecular forces such as ionic, hydrogen bonding, dipole-dipole interaction and Vander Waals dispersion force affects the boiling point of a compound. The influence of these forces depends on the functional group present.

Why do different compounds have different boiling points?

Different liquids have different boiling points depending on the strength of bonding between the particles and the mass of the particles. The heavier the particles in the liquid, and the stronger the bonding, the higher the boiling point will be.

What is high boiling point?

A liquid at high pressure has a higher boiling point than when that liquid is at atmospheric pressure. For example, water boils at 100 °C (212 °F) at sea level, but at 93.4 °C (200.1 °F) at 1,905 metres (6,250 ft) altitude. For a given pressure, different liquids will boil at different temperatures.

What does the boiling point depend on?

The boiling point of a liquid depends on temperature, atmospheric pressure, and the vapor pressure of the liquid.

Why does boiling point increase as carbon chain increases?

Physical properties

The boiling points of alkanes increase with increasing number of carbons. This is because the intermolecular attractive forces, although individually weak, become cumulatively more significant as the number of atoms and electrons in the molecule increases.

Why boiling point decreases with decrease in pressure?

Lowering the pressure lowers the boiling point because the molecules need less speed to escape.

How does boiling point vary with increase in carbon chain?

Answer: As the number of carbon atoms increases or the length of carbon-carbon chain increases, the boiling point also increases. This is because the force of attraction between the molecules increases as the molecule gets longer and has more electrons.

Does more bonds mean higher boiling point?

More carbons means a greater surface area possible for hydrophobic interaction, and thus higher boiling points. As you would expect, the strength of intermolecular hydrogen bonding and dipole-dipole interactions is reflected in higher boiling points.

Why are melting point and boiling point different for the same matter?

This is when they become a liquid. So the melting point is the temperature at which molecules in a solid can move past each other and form a liquid. The boiling point, on the other hand, involves liquids and gases. ... As temperature is increased, the liquid molecules move faster and faster and more of them escape as gas.

Why is the boiling point of oil higher than water?

The oil will get hotter than the water for a given amount of added heat. That is due to the difference in Specific Heat capacities. The defining equation is ΔT = ΔQ/C where ΔT is the change in temperature, ΔQ is the amount of added heat, and C is the specific heat capacity.

Why does boiling point decrease with branching?

Weaker intermolecular forces means that less energy is required to separate the molecules of a compound from its liquid surface, thus lowering the boiling point. As branching increases, the surface area decreases and hence the intermolecular forces of attraction which ultimately results in decrease of boiling point.