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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
What else can I help you with?
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 normal and molar concentrations in a solution?
Normal concentration is expressed in terms of equivalents of a substance per liter of solution, while molar concentration is expressed in terms of moles of a substance per liter of solution. The difference lies in how the concentration is calculated and represented in the solution.
What is the difference between isosmotic and isotonic solutions?
Isosmotic solutions have the same concentration of solutes, while isotonic solutions have the same concentration of solutes and the same osmotic pressure.
What's the difference between isotonic and hypertonic solutions"?
Isotonic solutions have the same concentration of solutes as the cells, while hypertonic solutions have a higher concentration of solutes than the cells.
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 is the difference between activity and experiment?
the difference between activity and experiment is ...experiment is do
Can you briefly discuss the difference between a concentration gradient and concentration difference?
A concentration gradient refers to the gradual change in concentration of a substance over a distance, while a concentration difference simply indicates the variation in concentration between two points. In essence, a concentration gradient describes how the concentration changes across a space, whereas a concentration difference highlights the contrast in concentration between specific locations.
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 is the difference in concentration between a region of high concentration and one of lower concentration?
There is no exact number assigned to the difference between the higher and lower concentrations. However, the establishment of a concentration differential is essential for both diffusion as well as osmosis.
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 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 the the difference between the salt concentration of hot water and the salt concentration of cold water?
The same
What is called the difference between the value that an activity generates and the cost of the activity?
revenue
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
