Respuesta :

Willchemistry
Kw = [ H+] x [ OH-]

1 x 10⁻¹⁴ = [ 3.5 x 10⁻⁶] x [OH-]

[OH-] = 1 x 10⁻¹⁴ / 3.5 x 10⁻⁶

[OH-] = 2.85 x 10⁻⁹ M