An aqueous solution is found to have an H⁺ concentration of 7.8 × 10^-² M.What is the concentration of OH^- in this solution?

Question

Quizplus · Accepted Answer

Since the problem tells us that the concentration of HS^- is 7.8 × 10^-12 M, we can use the ionization constant expression for water: Kw = [H+][OH-] = 1.0 × 10^-14, to find [OH-].
Kw = [H+][OH-]
1.0 × 10^-14 = x(7.8 × 10^-12)
x = 1.3 × 10^-2 M = [OH-]
Therefore, the concentration of OHS^- is 1.3 × 10^-2 M.

An Aqueous Solution Is Found to Have an H+ Concentration

An Aqueous Solution Is Found to Have an H⁺ Concentration