Calculate the ph after 10 ml of 1.0 m sodium hydroxide is added to 60 ml of 0.5m acetic acid.

Explanation:

It is given that the total volume is (10 mL + 60 mL) = 70 mL.

Also, it is known that =

Where,     = total volume

                = initial volume

Therefore, new concentration of =

                                        =

                                        = 0.43 M

New concentration of NaOH =

                                               =

                                               = 0.14 M

So, the given reaction will be as follows.

Initial:             0.43          0.14                     0

Change:          -0.14        -0.14                    0.14

Equilibrium:    0.29          0                       0.14

As it is known that value of = 4.74

Therefore, according to Henderson-Hasselbalch equation calculate the pH as follows.

           pH =

                 =

                 = 4.74 + (-0.316)

                 = 4.42

Therefore, we can conclude that the pH of given reaction is 4.42.

the answer is c i believe