Calculation of molar ratios of conjugate base to weak acid from ph for a weak acid with a pka of 6.0, calculate the ratio of conjugate base to acid at a ph of 5.0.

choice of weak acid for a buffer which of these com-pounds would be the best buffer at ph 5.0: formic acid (pka 5 3.8), acetic acid (pka 5 4.76), or ethylamine (pka 5 9.0)? briefly justify your answer.

Explanation:

According to the Handerson equation,  

          pH =

or,      pH =

Putting the given values into the above equation as follows.

     pH =

       5.0 = 6.0 + log \frac{\text{conjugate base}}{\text{acid}}[/tex]

      = -1.0

or,      

                            = 0.1

Therefore, we can conclude that molar ratios of conjugate base to weak acid for given solution is 0.1.

the answer to your question is c.

if you read the house of usher you should know that the house was haunted

your answer would be “dry”