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A buffer solution is an aqueous solution that consists of a mixture of a weak acid and its conjugate base or a weak base and its conjugate acid. It is used to run biochemical assays; to prevent changes in the pH of a solution.
Wiki User
∙ 9y ago
Amber Brown
Aidan Cantu
An acid-base conjugate pair that keeps the pH from changing (apex)
Libby N
To limit the pH change in a solution.
Apex
LemonAnts
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Wiki User
∙ 13y agoBuffer solutions are solutions comprised of a weak acid and it's conjugate base, or a weak base and its conjugate acid. The solutions are very resistant to change in pH when an acid or base is added.
An example of a buffer solution:
HF+H20 <--> H30+ + F-
*HF is the weak acid, F- is the conjugate base
-If acid (hydrogen ions, H+) were added to this solution, the H+ would react with the F- and would create more HF, shifting the equilibrium to the left. Consequently, there would be little change to the pH of the solution, as most of the H+ ions would be "used up". However, it is important to note that buffers do have a certain capacity, and once the acid is in excess (all of the F-(conjugate base) is converted back to HF), the solution will no longer be resistant to change in pH.
Buffers are substances that minimize changes in the concentrations of H+ and OH- in a solution. Buffers do so by accepting hydrogen ions from the solution when they are in excess and donating hydrogen ions to the solution when they have been depleted.
Wiki User
∙ 10y agoA buffer solution is a solution that resists changes in pH caused by the addition of acid or alkali. There are two types of buffers:
1. Acidic
2. Basic
Acidic buffers comprise of a weak acid and its salt. eg. ethanoic acid and sodium ethanoate. Basic Buffers comprise of a weak base and its conjugate salt. eg. aqueous ammonia and ammonium chloride.
Wiki User
∙ 6y agoA chemical buffer is a solution that resists changes in pH upon adding small quantities of acid or base.
It is a pair of chemicals- a weak acid and its salt or a weak base and its salt - that, if present in a given solution, can keep the pH almost constant even when small amounts of acid or base are added to the solution.
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A buffer can also mean any of several polishing devices, used for surfaces that may also be waxed (e.g. floors, cars, metal forms).
Wiki User
∙ 11y agoA buffer resists or tries to stop changes in pH.
E.g.
Your blood pH should always be 7.4..... a slight change can send you to coma or can kill you .....by drink cola ,lemon, eating orange and eating salty food and million other ways you try to change your blood ph......
But thanks God you have been given Buffer system in your body to stop that pH change in your blood and keep you alive...
The buffer will fight that pH change and maintain the pH in 7.4....even if you drink too much of lemon juice....
but if your buffer is somehow not working ...you can get acidosis or alkalosis.....
Acidosis acidic blood, alkalosis basic ( alkalic) blood both very dangerous
The Riddle Man 7235
To limit the pH change in a solution - Apex Learning
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Can be mixed in a solution with H2CO3 to make a buffer?
H2CO3 is not used as buffer.
What are the uses of a buffer?
Buffers are used to maintain pH of the solution
How you classify the solution as a best buffer solution?
A buffer solution is one involving a weak base/weak acid with its conjugate acid/base. In a buffer solution, the pH must be changed to only a small amount. Thus, any solution with a STRONG acid or a STRONG base is not a successful buffer solution because there would be a relatively large change in the initial pH.
Where can someone find infromatuon about buffer solution?
There are many places where one can find information about buffer solution. One can find information about buffer solution at popular on the web sources such as Chem Guide and Doc Brown.
What happens to the buffer solution pH 7 when acid is added?
When acid is added to a buffer solution at pH 7, the pH of the buffer solution will decrease. However, due to the presence of a conjugate base in the buffer solution, the buffer will resist the change in pH and try to maintain its original pH value. This is because the conjugate base will react with the acid and prevent a significant decrease in pH.
Can be mixed in a solution with H2CO3 to make a buffer?
H2CO3 is not used as buffer.
What is TNE buffer?
tris, EDTA (TE solution) and NaCl, TNE buffer is a buffer solution used in molecular biology, especially for DNA and RNA
What can be mixed in solution with H2CO3 to make a buffer?
H2CO3 is not used as buffer.
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.
What is pseudo buffer?
a solution which does not fulfills the property of a buffer solution but act as buffer solution.
Why a buffer is used and the effects of a buffer on a solution?
A buffer is used to resist the change in pH when acid or alkali is added to a solution. This makes it a stable environment, eg. for enzymes. The buffer stops the pH of the solution changing too drastically.
What are the uses of a buffer?
Buffers are used to maintain pH of the solution
Role of Cl in TE buffer solution?
TE buffer is a often used as a buffer solution in molecular biology, mainly in procedures involving DNA or RNA. The purpose of TE buffer is to solubilize DNA or RNA, while protecting it from degradation.
What happens when HCl is mixed with a solution that is not a buffer solution?
If the solution is not a buffer, the HCl will react with the solution to form a product.
Is NaCl plus HF a buffer?
I don't believe that this solution was used.
Can vinegar be used to make a buffer solution?
Vinegar (acetic acid) is a weak acid, so yes it can be used to make a buffer.
What are pH electrode storage solution and pH 7.0 buffer and for what are they used?
The buffer solution is used to calibrate the meter. Usually two buffer solutions are used to do this. One is close to the range of the sample that will be measured, like the 7.0 buffer that you mention could be used for aquarium water. The other solution would be more acidic, like a 4.0 buffer solution. The process is to calibrate in one solution, rinse the probe, then calibrate in the other solution. This back and forth is done until the meter is reading the desired buffer and is stable. In other words, you would finish with the 7.0 buffer solution when it is reading exactly 7.0 PH, with no further adjustments after switching from the 4.0 solution. The probe should be rinsed with PH neutral DI water and shaken dry between each between each measurement so that solutions are not mixed. The storage solution is used to store the glass probe for long periods of time. A few drops of storage solution should be dripped into the probe cap before replacing it for storage. The storage solution is just a buffer that has some anti-bacterial additives to keep stuff from growing in it. The calibration buffer can be used for short term storage though. The glass probe should NEVER be allowed to dry out for long periods and should be rinsed with DI water before storage. It should NOT be stored in DI water though. Only buffer solution or storage solution should be used.
