Determine the pH of an HNO2 solution of each of the following concentrations:

a) 0.110 M

b.)1.50 *10-2 M

If you add 5.00 ml of 0.100 m sodium hydroxide to 50.0 ml of acetate buffer that is 0.100 m in both acetic acid and sodium acetate, what is the ph of the resulting solution? acetic acid: ka = 1.8. x 10-5