# pH Determination After Titration

6. What is the hydrogen ion concentration of a solution with a pH = 4.54?

a. 2.9 x 10^-19

b. 1.1 x 10^-2

c. 7.8 x 10^-5

d. 2.9 x 10^-5

e. 3.5 x 10^-10

16. What is the pH of a solution after titrating 25.0 mL of 0.500M HCOOH with 15.0 M of 0.500 M NaOH?

a. 8.78

b. 3.57

c. 3.91

d. 10.43

e. 5.22

17. What is the pH of a solution after 65.0 mL of 0.250 M HI is titrated with 25.0 mL 0.500 M NaOH?

a. 1.20

b. 2.08

c. 1.38

d. 12.80

e. 11.92

https://brainmass.com/chemistry/physical-chemistry/ph-determination-after-titration-112939

#### Solution Preview

6.PH=-log [H+]

PH=4.54

Therefore [H+] is obtained by taking antilog of 4.54

Which is (D)= 2.9x10-5

16. No of millimoles of acid reacting is 25x.5=12.5

No of millimoles of ...

#### Solution Summary

This solution contains step-by-step calculations to determine the pH or hydrogen ion concentration of the solution using the power of hydrogen equation.