Answer :
Hello!
The function of a buffer is to maintain a neutral pH.
A buffer is composed of a Weak Acid, which resists the addition of bases; and the Conjugate Base of the Weak Acid which resists the addition of acids.
Buffer solutions maintain a pH that is near the value of the pKa of the Weak Acid that is used to form the Buffer. The pH of a buffer solution can be calculated using the Henderson-Hasselbach equation:
[tex]pH=pKa+log( \frac{[A^{-}] }{[HA]} )[/tex]
Have a nice day!
The function of a buffer is to maintain a neutral pH.
A buffer is composed of a Weak Acid, which resists the addition of bases; and the Conjugate Base of the Weak Acid which resists the addition of acids.
Buffer solutions maintain a pH that is near the value of the pKa of the Weak Acid that is used to form the Buffer. The pH of a buffer solution can be calculated using the Henderson-Hasselbach equation:
[tex]pH=pKa+log( \frac{[A^{-}] }{[HA]} )[/tex]
Have a nice day!
Answer:
The function of a buffer is to maintain the ph of a solution
Explanation:
A buffer is a solution containing a weak acid and its salt or a weak base and the corresponding salt. The purpose of adding a buffer to a solution is to maintain the pH of the solution. The buffer works by neutralizing the excess H+ or OH- ions added to the solution.
pH is given by the Henderson-Hasselbalch equation.
For an acid buffer like (acetic acid/sodium acetate)
[tex]pH = pKa + log\frac{salt}{acid}[/tex]
Similarly for a basic buffer (ammonia/ammonium nitrate):
[tex]pH = pKb + log\frac{salt}{base}[/tex]
where Ka and Kb are the acid and base dissociation constants.