Be sure to answer all parts. what is the [h3o+] and the ph of a buffer that consists of 0.26 m hno2 and 0.89 m kno2? (k, of hno2 = 7.1 x 10-4) fh 0+1= x 10 m (enter your answer in scientific notation.) ph =

Answer : The ion concentration is, and the pH of a buffer is, 2.95

Explanation : Given,

Concentration of (weak acid)= 0.26 M

Concentration of (conjugate base or salt)= 0.89 M

First we have to calculate the value of .

The expression used for the calculation of is,

Now put the value of in this expression, we get:

Now we have to calculate the pH of the solution.

Using Henderson Hesselbach equation :

Now put all the given values in this expression, we get:

The pH of a buffer is, 2.95

Now we have to calculate the ion concentration.

The ion concentration is,

"record the time to complete a chemical reaction" would most likely be part of a lab procedure.