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What is the relationship between molecular size and diffusion rate?
Wiki User
∙ 11y ago
Not exactly, although they can be. If two molecules are both composed of the same elements, the one that has more atoms in it, the one with more atoms will have a larger molecular mass, and a larger molecular size. However, different elements weigh different amounts.
Take for example the molecule octane, which is an ingredient in gasoline, with formula C8H18. Octane is relatively large, and has a molecular mass of approximately 114 grams per moles. However, a single atom of the element lead, Pb, is much smaller than the molecule octane, and yet the molar mass of lead is 207.2 grams per mole! So it is much heavier, and yet smaller.
On the other hand, hydrogen gas (H2) has a molar mass of 2 grams per mole, and chlorine gas (Cl2) has a molar mass of 71 grams per mole, and Cl2 is indeed much larger than H2.
And so you can see that it depends on the composition of the things you are comparing.
Wiki User
∙ 16y ago
Wiki User
∙ 10y agoSince the strength of dispersion forces depends on the electron cloud around the molecule being able to move, London forces are increased by a larger molecular size, because that means more electrons
Wiki User
∙ 11y agoThe rate of diffusion depends on the size of the molecule. It can be fast (if molecule is small) or slow (if molecule is large).
Wiki User
∙ 15y agothe bigger the molecules, the stronger the intermolecular forces. this is also true of molecular chain length (the longer the chain, the stronger the imf)
Wiki User
∙ 13y agoThe bigger the mass the higher the boiling point.
Wiki User
∙ 7y agoThe larger the size, the more dispersion forces there will be.
Wiki User
∙ 7y agoThe larger the molecules, the larger the intermolecular forces. This assumes that the large molecules are not branched which tends to reduce the effect.
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Effect of molecular size on diffusion?
Molecular Diffusion Of Light
How does molecular size affect diffusion rate?
Rate of diffusion is indirectly proportional to the molecular mass. This means that for a heavier particle, (i.e, higher molecular mass), the rate of diffusion is slower because they would have to travel the same distance with more energy compared to smaller molecules. Imagine a fat man trying to run and a slimmer man, the fat man would require more energy.Read more: What_is_the_relationship_between_the_rate_of_diffusion_and_the_molecular_mass_of_a_substance
What controls the rate of diffusion?
The rate of diffusion is directly related to the concentration of gradient. For example, the greater the amount between the concentration of the areas, the greater the greater to difference in diffusion.
Relationship between surface area and rate of reaction?
The greater the Surface Area: Volume Ration SA/V the faster the diffusion should take place.
What is diffusion rate proportional to?
rate of diffusion depends on the concentration gradient, surface area, distance over which diffusion takes place, size and nature of the diffusing molecule.
Infer the relationship between rate diffusion and molecular mass of a substance?
ako nga ang naghahanap ng sagot
Relationship between gas's molecular weight and speed of effusion?
Higher is the molecular mass lower is the rate of effusion, when mass increases by 4 times rate decreases to one half (Graham's law of diffusion).
Effect of molecular size on diffusion?
Molecular Diffusion Of Light
What is the relationship between surface area to volume ratio and the rate of diffusion?
The higher the ratio, the faster the rate of diffusion
What is the relationship between mass and rate of diffusion?
Molecular weight and diffusion are inversely related. The heavier the molecule, the slower the rate of diffusion.Related Information:This means that for heavier molecules, (i.e, higher molecular mass substances), the rate of diffusion is slower, because the available energy can't move them as quickly as the smaller molecules over the same distance.Analogy: Imagine the difference between having to carry an empty bucket up a ladder, and then one filled with sand. With highest effort, it would take longer to carry the bucket filled with sand to the top of the ladder, than it would the empty one.
What is the effect of the density of liquid on the rate of diffusion?
The increase in density will decrease the rate of diffusion. There is an inverse relation between density and rate of diffusion.
What three things can affect the rate of diffusion?
Diffusion refers to the process where substances from a highly concentrated area move to a place with a lower concentration. The three factors that affect the rate of diffusion are temperature, concentration gradient and the molecular weight of the substances.
How does molecular size affect diffusion rate?
Rate of diffusion is indirectly proportional to the molecular mass. This means that for a heavier particle, (i.e, higher molecular mass), the rate of diffusion is slower because they would have to travel the same distance with more energy compared to smaller molecules. Imagine a fat man trying to run and a slimmer man, the fat man would require more energy.Read more: What_is_the_relationship_between_the_rate_of_diffusion_and_the_molecular_mass_of_a_substance
What is the relationship between the temperature and diffusion rate?
As temperature increases, the kinetic energy of the molecules increases, so the rate of diffusion also increases.
How does pressure affect the rate of diffussion?
Higher pressures cause more molecular collisions which in turn causes a greater rate of diffusion. The opposite is also true - lower pressures cause a decreased rate of diffusion.
How does surface area to volume ratio of a cell affect rate of diffusion?
The surface area to volume ratio of a cell affects the rate of diffusion in that the higher the ratio, the faster the rate of diffusion. This is a directly proportional relationship.
What factors affect the diffusion rate?
Diffusion refers to the process where substances from a highly concentrated area move to a place with a lower concentration. The three factors that affect the rate of diffusion are temperature, concentration gradient and the molecular weight of the substances.
