Question

4. What molar concentration of Nh3 provide a OH concernation of 1.5*10^3

Answer 1

Given,

[OH⁻] = 1.5 × 10⁻¹

K_b​ = 1.8 × 10⁻⁵

The reaction involved is

From above reaction it is clear that equilibrium concentration of [OH⁻] is same as equilibrium concentration of [NH₄⁺​]