A: What is the pH of a buffer prepared by adding 0.809mol of the weak acid HA to 0.305mol of NaA in 2.00L of solution? the dissociation constant Ka of HA is 5.66x10^-7
B: what ist he pH after 0.150mol of HCl is added to the buffer?
C:What ist he pH after 0.195mol of NaOH is added to the buffer?