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Molecules that have strong intermolecular forces are held together more strongly. In order for a substance to boil, it's molecules must separate and gain energy. Because molecules with stronger intermolecular forces are held together more strongly it takes more energy to move them apart, hence the higher boiling point
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How does polarising power effect boiling point?
Polar molecules have relatively weak intermolecular forces. Intermolecular forces and boiling point have a direct relationship, so due to the fact that polar molecules have weak forces, their boiling points will be lower.
What are discrete atoms?
A discrete atom or molecule is one with very weak intermolecular forces, causing them to have low melting and boiling points.
What type of bonds melts at low temperature?
Anything with a covalent bond has a relatively low boiling point because they intermolecular forces are weak. On the other hand ALOT of energy is required to melt ionic compounds
What indicates the presence of weak intermolecular forces in a liquid?
The characteristic that indicates the presence of weak intermolecular forces in a liquid is a low heat of vaporization. Another characteristic that indicates the presence of weak intermolecular forces in a liquid is a high vapor pressure.
Why do compounds with strong intermolecular attractive forces have higher boiling points than compounds with weak intermolecular attractive forces?
Heat is simply an expression of how fast molecules are vibrating and moving about, for the purposes of state of matter. Intermolecular bonds are what stop this motion from happening, so the stronger this bond, the higher the temperature needs to be for the compound to melt or boil.
How does polarising power effect boiling point?
Polar molecules have relatively weak intermolecular forces. Intermolecular forces and boiling point have a direct relationship, so due to the fact that polar molecules have weak forces, their boiling points will be lower.
Why does sulfur dioxide have low boiling point?
It has a low boiling point because it has weak intermolecular forces in its covalent bonds
Does KCl have a higher boiling point than CO2?
KCl is an ionic substance (strong intermolecular forces) and CO2 is a non-polar covalent substance (weak intermolecular forces)
Why does solid iodine vaporise when warmed gently?
Its got weak van der waals forces as it is a simple molecule - these intermolecular forces are weak so require less energy to break, leading it to have a low boiling point.
What are discrete atoms?
A discrete atom or molecule is one with very weak intermolecular forces, causing them to have low melting and boiling points.
Why does sulfur have low melting point?
By contrast, the forces of attraction are very weak. The result of these feeble intermolecular forces is that the melting point is very low.
Which has a higher boiling point CH3CH3 or CH3NH2?
CH3NH2 has the higher boiling point as it has a hydrogen bond between the molecule which is a stronger intermolecular attractive force, whereas CH3CH3 only has covalent bonds which are weaker intermolecular attractive forces.
What type of bonds melts at low temperature?
Anything with a covalent bond has a relatively low boiling point because they intermolecular forces are weak. On the other hand ALOT of energy is required to melt ionic compounds
What indicates the presence of weak intermolecular forces in a liquid?
The characteristic that indicates the presence of weak intermolecular forces in a liquid is a low heat of vaporization. Another characteristic that indicates the presence of weak intermolecular forces in a liquid is a high vapor pressure.
Why chlorine oxide has a low melting point?
Being a covalent compound, the intermolecular forces between the Cl2O molecules are weak and easily overcome. Therefore little heat energy, in terms of low boiling point is involved.
What is the relationship of boiling point and mass?
In liquids, molecules are close together while in gases, molecules are very far apart. As liquids are heated, temperature increases and the energy in the molecules increase. The molecular motion becomes so great that the intermolecular forces between molecules are interrupted. In other words, the molecules move so fast that they break free from the liquid and form a gas. Polarity affects boiling temperature. The greater the intermolecular forces are, the higher the boiling temperature is because it takes more energy to overcome the intermolecular forces. Hydrogen bonding is a particularly strong type of intermolecular force. For example, water, which has hydrogen bonding, therefore needs a high temperature before the energy in the moving molecules are enough to overcome the strong hydrogen bonds. Molecules with hydrogen bonding have higher boiling temperatures than nonpolar molecules with weak London Dispersion Forces.
Why do compounds with strong intermolecular attractive forces have higher boiling points than compounds with weak intermolecular attractive forces?
Heat is simply an expression of how fast molecules are vibrating and moving about, for the purposes of state of matter. Intermolecular bonds are what stop this motion from happening, so the stronger this bond, the higher the temperature needs to be for the compound to melt or boil.
