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Why does an increase in the number of molecules increase the pressure?
An increase in the number of molecules increases the frequency of molecular collisions with the container walls. With more collisions per unit time, the average force exerted by the molecules on the walls increases, resulting in an increase in pressure.
What is the relationship between polarity and vapor pressure?
They are inversely related. The volatility of a liquid increases with decreasing vapor pressure, as it provides more reversible effect on liquid molecules, so less liquid molecules are able to escape. Conversely, the volatility of liquid increases with decreasing vapor pressure, as it provides less reversible effect on liquid molecules, allowing more to escape.
How does the volume of an ideal gas at constant temperature and pressure change as the number of molecules increases?
The volume of an ideal gas will increase as the number of molecules increases at constant temperature and pressure. This relationship is described by Avogadro's law, which states that the volume of a gas is directly proportional to the number of molecules present, assuming constant temperature and pressure.
How does vapor pressure of a substance depend on temperature and strength of intermolecular forces?
The vapor pressure of a substance increases with temperature because higher temperatures provide more energy for molecules to escape into the vapor phase. In terms of intermolecular forces, weaker forces lead to higher vapor pressures because molecules can more easily overcome these forces and escape into the vapor phase. Strong intermolecular forces, such as in substances with hydrogen bonding, will result in lower vapor pressures.
How is temperature affected by gas pressure?
As gas pressure increases, temperature also increases. This is due to the fact that an increase in pressure leads to more frequent collisions between gas molecules, resulting in an increase in kinetic energy and thus temperature. Conversely, a decrease in pressure would lead to a decrease in temperature.
