Calculate the desired sizes for the solutions given below.

a) Calculate the pH value of 1.0x10 ^ -8 M NaOH solution.

b) Calculate the pH of the 0.01 M aniline hydrochloride (C6H5NH3Cl) solution. Ka = 2.51 x10 ^ -5

c) 100 mL 0.10 M HCl to a solution containing 50 mL of 0.10 M lactic acid (HA) and 0.25 M sodium lactate (NaA)

what is the pH value when added? Ka = 1.38 x10 ^ -4

d) 0.05 moles solid NH4Cl dissolved in 200 mL of 0.20 M ammonia. The solution [OH-] and [H3O +] concentrations (Kb = 1.78 x10 ^ -5)

e) Calculate the molar concentration of Na2CO3 in the resulting solution when 25.0 mL of 0.200 M AgNO3 solution is mixed with 50.0 mL of 0.100 M Na2CO3.

Na2CO3 (aq) + 2AgNO3 (aq) Ag2CO3 (s) + 2NaNO3 (aq)