Assume that for the pH 9.2 phenolphthalein sample, you used half as much phenolphthalein solution (i. e your sample is 9 ml buffer, 0.5 ml phenophthalein solution and 0.5 ml water). what should happen to the value of Kc you determine?

Explanation:

It is given that pH is equal to 9.2. So, we will calculate the value of as follows.

        pH =

Putting the given values into the above formula as follows.

    pH =

                  = 7.9

                       =

Since, the value of comes out to be positive. This means that there will occur an increase in the value of or .