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Do strong intermolecular forces between molecules of the substance can cause peak broadening of some of the absorptions in the infrared spectrum of the substance.?
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How do intermolecular forces determine a substance's state?
If the intermolecular forces are great enough they can hold the molecules together as a liquid. If they are even stronger they will hold the molecules together as a solid. Water has nearly the same mass as methane and ammonia molecules, but the greater molecular forces between water molecules causes the water to be liquid at room temperature, while ammonia and methane, with weaker intermolecular forces, are gases at room temperature.
What is an intermolecular force?
Intermolecular forces are any forces exerted on neighboring molecules of a given compound. The forces are not the actual chemical bonds present in the substance, but rather the substances own attractiveness to its own molecules. These intermolecular forces play a crucial role in determining a compounds various physical properties such as but not limited to :solubility, melting point, boiling point, density.
Attraction between molecules of the same substance is called what?
It is intermolecular force of attraction, it may be 1- dipole - dipole interaction, 2- vander waal's force of attraction.
What happens to a substance when it dissolves in a liquid?
The molecules of the substance are totally dispersed in the liquid forming a homogeneous solution, intermolecular forces being practically annulled.
How does hydrophobic and hydrophilic behaves in water?
hydrophilic substances are electrically polar in character, they possess a dipole. Intermolecular forces associated with this polarity attract (or are attracted by) the polar water molecules. Having sufficient energy, the water molecules can interpose themselves between and eventually surround the hydrophilic substance thus reducing the repulsive intermolecular forces acting between these hydrophilic molecules in their pure state... Energy and Entropy effects are driving the process...
Is the properties of each state of a substance are due largely to the degree of intermolecular bonding?
Yes. The bonding of the specific molecules of a substance determines its state of matter.
How do intermolecular force affects whether a substance is a solid at room temperature?
The stronger the intermolecular attractions are between two molecules, the more likely they are to stay together at a any given temperature.
What makes a liquid different from a solid of the same substance?
the arrangement of it's molecules...... which depend on kinetic energy and intermolecular force.
Why boiling point is low when intermolecular forces are weak?
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
The stronger the intermolecular forces in a substance?
The stronger the forces the stronger the attraction between the molecules in the substance. This will tend to increase the temperature of phase changes, melting and boiling points.
How does intermolecular forces of a substance determine the phase the substance is in?
The strength of the intermolecular forces will determine what phase the substance is in at any given temperature and pressure. Consider the halogens for example, fluorine and chlorine are gases, while bromine is a liquid and iodine is a solid at room temperature. When considering the intermolecular forces present, each of these substances only has London forces, which increase in magnitude with increasing size of the molecules, and size increases as you go down a group in the periodic table. So, fluorine has the smallest intermolecular forces, and iodine has the largest. This explains why these different substances exist in different phases when at room temperature and pressure. The molecules in fluorine, for example, are only slightly attracted to each other, and therefore the substance exists as a gas. The stronger intermolecular forces in bromine, however, hold the molecules close to each other, but not quite strongly enough to prevent the molecules from sliding past each other; this makes bromine a liquid. Finally, in iodine, the intermolecular forces are actually strong enough that the molecules are held in fixed positions relative to each other, thus making iodine a solid.
Why do the melting and boiling points of a particular subsatnce vary?
It is because the intermolecular forces(the attractive forces between the molecules of a substance) differ from one substance to another. The chemical with the stronger intermolecular forces will have higher melting and boiling points, and vice versa. This is because more energy is required to separate the molecules to melt or boil the substance, if the forces are strong. The factors that determine the size of these forces are :the type of bonding in the molcules, andthe mass of the molecules.
How do intermolecular forces determine a substance's state?
If the intermolecular forces are great enough they can hold the molecules together as a liquid. If they are even stronger they will hold the molecules together as a solid. Water has nearly the same mass as methane and ammonia molecules, but the greater molecular forces between water molecules causes the water to be liquid at room temperature, while ammonia and methane, with weaker intermolecular forces, are gases at room temperature.
How are the molecules in a particular solid different from the molecules of that substance in a liquid form?
the molecules in solids are tigthly packed that is the intermolecular force(cohesive) force is more but in liquids the intermolecular force(cohesive force) is less .solids have fixed shape,volume, mass but liquids have no fixed shape as it takes shape of the container.
What happens to the atoms or molecules of a substance when it boils?
the atoms and molecules will vibrate, causing the substance to heat up (friction causes heat, the molecules and atoms will rub together, causing friction). I hope this helped!!!!!n_n when a substance reaches its boiling point naturally the intermolecular force becomes weak and the substance gets converted from one form to another..
What does a high melting point temperature indicate about a substance?
Strong Intermolecular Forces attract the molecules
What is an intermolecular force?
Intermolecular forces are any forces exerted on neighboring molecules of a given compound. The forces are not the actual chemical bonds present in the substance, but rather the substances own attractiveness to its own molecules. These intermolecular forces play a crucial role in determining a compounds various physical properties such as but not limited to :solubility, melting point, boiling point, density.
