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Would you expect larger or smaller molecules to be components of a more viscous liquid?
Larger molecules tend to contribute to higher viscosity in liquids because they have more surface area to interact with neighboring molecules, resulting in stronger intermolecular forces that impede flow. Smaller molecules typically have lower viscosity as they facilitate easier movement between molecules.
Why does hydrogen gas diffuses faster than other gases?
The rate of diffusion of a gas is inversely related to the molecular weight of that gas. The lighter the gas, the faster it diffuses. Hydrogen is the lightest of all gases having a molecular weight of only 2. Thus it diffuses faster than all others.
Why tempertrue affects viscosity?
Temperature affects viscosity because it influences the movement of molecules in a substance. When temperature increases, molecules gain more kinetic energy and move faster, causing them to flow more easily and reducing viscosity. Conversely, lower temperatures lead to slower molecular movement and an increase in viscosity.
How does the movement of molecules in warm objects compare with the movement of molecules in cooler objects?
In warm objects, molecules move faster and have higher kinetic energy compared to molecules in cooler objects, which move more slowly with lower kinetic energy. This increased movement in warm objects leads to higher temperatures and faster chemical reactions.
How is temperature related to the viscosity of a liquid?
Temperature and viscosity of a liquid are inversely related; as temperature increases, viscosity decreases. This is due to increased molecular movement and reduced molecular attraction at higher temperatures, causing the liquid to flow more easily. Conversely, lower temperatures result in higher viscosity as molecular movement decreases, making the liquid more resistant to flow.
What is diffusion occurs because of the what movement of molecules?
No, diffusion does not occur because of random molecular movement. It is rather as a result of movement of molecules from areas of high concentration to lower concentration.
What measurement can move rapidly or slowly molecules around?
Temperature can control the speed of molecular movement. Higher temperatures lead to increased molecular motion, while lower temperatures slow down molecular movement.
True or false Gases with high molecular weights diffuse more slowly than gases with lower molecular weights?
True. Gases with high molecular weights have slower diffusion rates compared to gases with lower molecular weights due to their larger mass and lower average speed of the molecules.
How molecular weight and sedimentation constant is related to each other?
Molecular weight and sedimentation constant are related through the Svedberg equation, which states that the sedimentation constant (S) is inversely proportional to the molecular weight of a molecule. This means that larger molecules with higher molecular weights will have lower sedimentation constants, while smaller molecules with lower molecular weights will have higher sedimentation constants.
Effect of molecular size on diffusion?
In general, larger molecules diffuse more slowly than smaller molecules because they have a larger molecular weight and therefore experience more resistance from the surrounding medium as they move. This is due to the fact that larger molecules have a lower diffusion coefficient and therefore diffuse at a slower rate. Additionally, larger molecules may also be more prone to interacting with other molecules in their surroundings, further slowing down their diffusion.
What do you call the movement of molecules or atoms from a region of higher concentration to a region of lower concentration?
The Atomic or Molecular movements generally known as Osmotic diffusion.
What happens to flammability as molecular size increases?
As molecular size increases, flammability tends to decrease. This is because larger molecules have a lower surface area-to-volume ratio, which makes it harder for oxygen to reach the interior of the molecule, inhibiting combustion. Additionally, larger molecules often contain more non-flammable components than smaller molecules.
Would a substance of high molecular weight diffuse faster than a substance of lower molecular weight?
No, substances with higher molecular weight typically diffuse more slowly than those with lower molecular weight due to larger size and greater interaction with surrounding molecules. Smaller molecules have less resistance to movement and can diffuse more easily across a membrane or through a solution.
How does the molecular mass affect freezing point depression?
The molecular mass of a solute affects freezing point depression because larger molecules disrupt the formation of solid crystals more than smaller molecules, leading to a lower freezing point for the solution.
During the process of diffusion what happens?
During diffusion, molecules move from an area of higher concentration to an area of lower concentration, in order to reach an equilibrium. This movement occurs randomly, driven by the kinetic energy of the molecules. Diffusion does not require energy input from the cell.
Difference between molecular motion and diffusion?
It triggers diffusion because diffusion is the movement of molecules, therefore as soon as the molecules move diffusion begins to do it's job. It will take them from areas of greater concentration to areas of lesser concentration.
Is kinetic energy lower in larger molecules?
Yes.
