Question

Calculate the hydrogen-ion concentration [H+] for the aqueous solution in which [OH–] is 1 x 10–11 mol/L. Is this solution acididc, basic, or neutral? Show your work. (3 points)

Answer 1

(H+)(OH-) = Kw
kw= 1 x10^-14
OH-= 1 x10 ^-11
(H+)= KW / OH-

concentration of H+ = (1x10^-14) /.(1 x 10 ^-11) = 1 x10 ^-3

Ph= -log (H+)

PH=-log ( 1 x 10 ^-3) = 3 therefore the solution is acidic since the PH less than 7