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when the capacity equals PKa where concentrations of acid and salt are the same that means Log base/acid equals zero
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What is the buffer capacity of Tris HCl?
7.5-9
What are the two main contributors to the buffer capacity of the blood?
enzyme carbonic anhydrase which make bicabonate. Bicarbonate act as the blodds's buffer.
Is buffer capacity the same if determined by titration with a strong base instead of a strong acid?
It depends a bit on the buffer itself, but it is usually true. Generally speaking, a buffer is a solution composed of a weak acid (or base) along with its conjugate base (or acid). Usually, the two components (let's call the HA and A- for a weak acid and its conjugate base) are added in equal concentrations. If this is the case, then it is also true that the pH of the solution is equal to the pKa of the weak acid, a very useful fact. If the concentration of two HA and A- are equal, then the buffer capacity should be the same using a strong acid or strong base. However, you can also make a buffer with unequal concentrations of HA and A-. This is still considered a buffer solution, and it will resist change to pH in both directions, but unequally now. If you have a higher concentration of HA than A-, then the buffer will have a higher capacity to resist pH change if you add a strong base (because the base will be deprotonating HA, which you have more of). If you added a strong acid instead, then you would protonate all the A- faster (than you would deprotonate HA with the same amount of strong base), and so it would have a lower buffer capacity. This discussion works equally well if you are using a weak base (B) and its conjugate acid (HB+) instead, except everything is switched!
A solution that is resistant to change in pH?
Solutions that resist change in pH when added to a strong acid or base are known as buffer solutions.
Is a chemical or combination of chemicals that keeps pH within normal range?
A buffer. just got the answer correct on a bio exam
Why doesn't the rectum have buffer capacity?
The rectum doesn't have enough fluids to have buffer capacity.
What is the buffer capacity of a solution of a strong base directly proportional to?
The buffer capacity of a strong base is directly proportional to the concentration of hydroyxl ions. Buffer capacity = 2.303 x [OH-]
Does buffer capacity depend on the amount of buffers present?
Yes. The higher the number of buffers, the higher the buffer capacity.
What happens to the buffer a pH capacity?
The buffer maintain the pH constant.
What is buffer capacity and what are the factors that effect the buffer capacity?
it is defined the capability of a buffer to resist the change of pH.it can be measured quantity that how much extra acid or base , the solution can absorb before the buffer is essentially destroyed. buffer capacity of a buffer solution is determined by the sizes of actual molarities . so , a chemist must decide before making the buffer solution.
Effect of Diluting a buffer?
The buffer capacity increases as the concentration of the buffer solution increases and is a maximum when the pH is equal to the same value as the pKa of the weak acid in the buffer. A buffer solution is a good buffer in the pH range that is + or - 1 pH unit of the pKa. Beyond that, buffering capacity is minimal.
Does buffer capacity change with temperature?
Yes
What is the buffer capacity of a solution of a strong acid directly proportional to?
It is directly proportional to the concentration of hydrogen ions. Buffer capacity = 2.303 x [H3O+]
What factors determine the buffering capacity of a solution?
The concentration of the buffer (the higher the concentration, the larger the buffering capacity) and how close the pKa of the buffer is compared to the pH of the solution (the closer the greater the buffer capacity).See the Related Questions to the left for more information on buffers.
What is the buffer capacity of Tris HCl?
7.5-9
How do you calculate the total buffer capacity of an aqueous solution of a strong base or base at any pH?
Buffer capacity depends on the Ka of the buffer component, the concentration of the buffer (C), as well as the [H3O+]. Thus, it will beBuffer capacity = 2.3 C (Ka x [H3O+]/(Ka + [H3O+])^2The Ka will be that of the conjugate acid and [H3OP+] will be the antilog of -pH. Then just plug and chug.
Is buffer overload a computer virus?
No, a buffer overload is not a computer virus. A buffer overload is an error that occurs when a program on your computer is writing data to a buffer and exceeds the buffer's capacity. This can cause problems and will usually cause the program which caused the buffer overload to crash.
