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Activity and Concentration • Activity - "effective concentration" • Ion-ion and ion-H2O interactions (hydration shell) cause number of ions available to react chemically ("free" ions) to be less than the number present • Concentration can be related to activity using the activity coefficient γ, where [a] = γ (c) we assume that activity, a, is equal to concentration, c, by setting γ = 1 when dealing with dilute aqueous solutions. But ions don't behave ideally . . . • Concentration related to activity using the activity coefficient γ, where [a] = γ (c) • The value of γ depends on: - Concentration of ions and charge in the solution - Charge of the ion - Diameter of the ion Activity coefficient γz → 1 as concentrations → 0
Concentration refers to the amount of a substance present in a given volume of solution, typically measured in moles per liter. Activity, on the other hand, takes into account how a species behaves in a solution and includes factors that affect its reactivity, such as ionic strength and complex formation. The activity coefficient quantifies the difference between the concentration and activity of a species in a solution.
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What is the difference in concentrations of a substance between two areas called?
This is called a concentration gradient. It represents the difference in the concentrations of a substance between two regions, with molecules naturally moving from high to low concentration areas to reach equilibrium.
What is the difference between concentration gradient of molecule and ions?
A concentration gradient of molecules refers to the difference in the concentration of a specific molecule across a distance or region, which drives passive diffusion. In contrast, a concentration gradient of ions specifically refers to the variance in the concentration of charged particles (ions) across a space, influencing cellular processes like ion channel transport.
What driving force Ofdiffusion?
The driving force of diffusion is the concentration gradient, which is the difference in concentration of a substance between two areas. Substances will move from an area of higher concentration to an area of lower concentration in order to reach equilibrium.
Does the steepness of con centration gradient affect the rate of difussion?
Yes, the steeper the concentration gradient, the faster the rate of diffusion. This is because there is a greater difference in concentration between two regions, driving molecules to move from areas of high concentration to areas of low concentration more rapidly.
What is the difference between inhibitor and activator?
An inhibitor is a molecule that prevents or reduces the activity of an enzyme or biological process. In contrast, an activator is a molecule that enhances or increases the activity of an enzyme or biological process. Both inhibitors and activators play important roles in regulating biochemical pathways.
What is the difference between activity and experiment?
the difference between activity and experiment is ...experiment is do
What forms a concentration whenever there is a difference in concentration between one place and another?
A concentration gradient forms when there is a difference in concentration between one place and another.
Why is low concentration has high percent inhibition?
Inhibition percentage is calculated based on the difference between the control (no inhibitor) and the test (with inhibitor) activity. In a low concentration, even a small decrease in activity can lead to a high percentage inhibition compared to a high concentration where a larger decrease is needed to achieve the same percentage inhibition.
What is the difference between the concentration of a particular molecule in one area and the concentration in an adjacent area?
The concentration gradient is the difference in concentration of a molecule between one area and an adjacent area. This difference creates a gradient that drives the movement of molecules from an area of higher concentration to an area of lower concentration, a process known as diffusion.
What kind of concentration forms whenever there is a difference in concentration between one place and another?
A gradient forms when there is a difference in concentration between two places. This gradient drives the movement of substances from areas of higher concentration to areas of lower concentration through processes such as diffusion or osmosis.
What is the difference in concentration between a region of high concentration and one of lower concentration?
The concentration gradient represents the difference in concentration between a region of high concentration and one of lower concentration. This gradient drives the diffusion of particles from areas of high concentration to areas of low concentration until equilibrium is reached.
What is the difference between tension span and attention span?
A tension span is the amount of suppressed temper someone has and an attention span is the amount of concentration one has on a certain subject or activity.
What is called the difference between the value that an activity generates and the cost of the activity?
revenue
What is the the difference between the salt concentration of hot water and the salt concentration of cold water?
The same
What is the difference between concentrated and concentration?
the difference between concentrated and dilute is concentrated is larger while dilute is smaller.
What is a difference between a concentration of a substance is called the?
i think it is homeostasis
What is the difference between moderate and vigorous physical activity?
it means to do an activity in a moderate level
