How does bicarbonate buffer acts?

Answer 1

Buffers work by accepting hydrogen ions from solutions when they are in excess and donating hydrogen ions to the solution when they are depleted.

In the bicarbonate buffer system the chemical equilibrium between carbonic acid and bicarbonate act as a pH regulator. If the H+ concentration in blood begins to fall (that is if the pH rises), more carbonic acid dissociates , replenishing hydrogen ions. When H+concentration begins to rise (pH drops), the bicarbonate ion acts as a base and removes the excess hydrogen ions.

Answer 2

Buffers work in different ways depending on exactly what the buffer is designed to do. In general, buffers are used for temporarily storing information in a location that makes it possible to access the data very quickly.

One example is a CD / DVD burner. Many CD / DVD burners have a small amount of RAM (memory) that can be accessed directly by the CD / DVD burner while it is recording a disc. This memory is able to be accessed and read from at very high speeds - much faster than a hard disk drive. When a CD / DVD burner is recording, the drive must never run out of data until the disc is finished, or the disc will have errors. To make sure that the burner always has a steady and fast stream of data going into it, it uses a buffer to store the information that it needs to write as it writes it. This way, if the hard drive slows down for a moment or two, it's OK because the memory buffer allows the drive to continuously run for a few seconds straight out of the buffer. This allows the hard drive a chance to "catch up" without making the CD / DVD burner have to stop and wait for more data.

Another good example would be the processor (CPU) inside a computer. The CPU has its own internal memory inside the chip that is used to store the immediate data that needs to be processed by the CPU. This special memory buffer is called cache memory, and runs very, very fast. Data is pulled from the regular memory and stored in the super-fast cache memory before the CPU is actually ready for it. This way, the CPU is never sitting around waiting for data to process because there is a buffer that is dedicated to supplying it with information.

Buffers can also be used to store information temporarily while the computer waits on a slower device, such as a hard disk drive. While hard drives are very fast on human terms, they are very slow on computer terms. To help the computer so that it does not have to wait all the time for the hard disk drive to be ready to write data, the computer uses a memory buffer. When the computer is ready to write information to the hard drive, it writes it to the memory buffer instead. That way, the computer can continue doing other things, and the memory buffer will write the data to the hard drive whenever the drive is ready for the data. This is why it's a very bad thing to turn off a computer without shutting it down first. Files can become corrupted if they are stored in a memory buffer and haven't had time to be written to the hard drive yet. Since buffers are usually in memory, they are completely wiped clean when their power source is removed.

Answer 3

Buffer is a combination of acid/base and its salt, bicarbonate is an acid buffer which means H2CO3 and Na or K bicarbonate together act as a buffer. When you add acid proton(H+) is taken by the bicarbonate ion and if you add base OH- ion is taken by the Na or k in the buffer, in that way buffer acts.

Answer 4

Buffers are substances that minimize changes in H plus and OH negative concentration in a substance. Buffers usually maintain blood at 7.4.

Answer 5

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