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Do larger molecules have stronger intermolecular forces compared to smaller molecules?
Yes, larger molecules generally have stronger intermolecular forces compared to smaller molecules due to increased surface area and more opportunities for interactions between molecules.
What is Adhesion and what is Cohesion?
Cohesion ia property of identical molecules to form agglomerates; a common example is the assembly of mercury from small bubbles into a larger one.Adhesion is the attraction between molecules of different chemical nature.
What is the difference between dispersion forces and dipole- dipole forces?
Dispersion forces are formed between two non-polar molecules. These molecules form temporary dipoles. This creates a weak force. Dipole Dipole forces have a permanent dipole. That is the basic explanation
What is the ranking of the following molecules based on their boiling points?
The ranking of molecules based on their boiling points is determined by their molecular weight and intermolecular forces. Generally, larger molecules with stronger intermolecular forces have higher boiling points.
How does molecule size affect melting point?
Intermolecular forces increase as molecular size increases, thus the bigger the molecular size, the bigger the molecular mass, the stronger the intermolecular forces, the more energy required to break the bonds between the molecule, thus a higher melting/boling point.
Do larger molecules have stronger intermolecular forces compared to smaller molecules?
Yes, larger molecules generally have stronger intermolecular forces compared to smaller molecules due to increased surface area and more opportunities for interactions between molecules.
What is Adhesion and what is Cohesion?
Cohesion ia property of identical molecules to form agglomerates; a common example is the assembly of mercury from small bubbles into a larger one.Adhesion is the attraction between molecules of different chemical nature.
Are cohesive forces greater than adhesive forces?
It depends on the material. In some materials, cohesive forces (forces between molecules of the same substance) are stronger than adhesive forces (forces between molecules of different substances), while in others, the opposite is true. Generally, cohesive forces tend to be stronger in materials with similar molecules, such as water.
What determines the strength of attractions between molecules?
The strength of attractions between molecules is determined by their polarity and size. Polar molecules tend to have stronger intermolecular forces due to the presence of partial charges, such as dipole-dipole interactions and hydrogen bonding. Larger molecules with more electrons can also exhibit stronger London dispersion forces.
How are the London forces between molecules produced?
London forces, also known as dispersion forces, arise from the temporary fluctuations in electron distribution within molecules, leading to the formation of instantaneous dipoles. These dipoles can induce corresponding dipoles in neighboring molecules, resulting in a weak attractive force between them. The strength of London forces increases with the number of electrons and the size of the molecules, making larger and more polarizable molecules exhibit stronger dispersion interactions. Overall, these forces are a fundamental type of van der Waals forces that contribute to the physical properties of substances.
Explain how the size of hydrocarobon molecules affects the strength of intermolecular forces?
The larger the hydrocarbon molecule, the greater the surface area available for van der Waals forces to act upon, leading to stronger intermolecular forces. Larger molecules have more electrons that can participate in these forces, increasing the overall strength of attraction between molecules. Smaller hydrocarbon molecules have less surface area and fewer electrons available for interaction, resulting in weaker intermolecular forces.
Which substance in each of the following pairs would you expect to have larger dispersion forces?
The substance with a larger molecular mass will generally have larger dispersion forces. Additionally, molecules with more surface area tend to have stronger dispersion forces.
Why is methane soluble in oil?
Methane is soluble in oil because both substances are non-polar, meaning they have similar intermolecular forces. This allows methane molecules to mix well with oil molecules, resulting in solubility. Additionally, the small size of methane molecules enables them to fit between the larger oil molecules.
What is the difference between dispersion forces and dipole- dipole forces?
Dispersion forces are formed between two non-polar molecules. These molecules form temporary dipoles. This creates a weak force. Dipole Dipole forces have a permanent dipole. That is the basic explanation
Molecules are held together by gravitational force?
Molecules are held together by intermolecular forces such as covalent, ionic, or hydrogen bonds, not gravitational force. Gravitational force is much weaker compared to these intermolecular forces and is more relevant on a larger scale, such as between planets or stars.
What is the ranking of the following molecules based on their boiling points?
The ranking of molecules based on their boiling points is determined by their molecular weight and intermolecular forces. Generally, larger molecules with stronger intermolecular forces have higher boiling points.
Does the size of molecules affect a liquids resistance?
Yes, the size of molecules can affect a liquid's resistance. Larger molecules tend to have higher viscosity, which is a measure of a liquid's resistance to flow. This is because larger molecules have more intermolecular forces that hinder their movement.
