a solution of ammonia has a ph of 11.8. what is the concentration of oh⁻ ions in the solution? useful…

a solution of ammonia has a ph of 11.8. what is the concentration of oh⁻ ions in the solution? useful formulas include h₃o⁺=10⁻ᵖᴴ, oh⁻=10⁻ᵖᴼᴴ, ph + poh = 14, and h₃o⁺oh⁻=10⁻¹⁴. 1.58×10⁻¹² m 6.31×10⁻³ m 2.20 m 158 m

a solution of ammonia has a ph of 11.8. what is the concentration of oh⁻ ions in the solution? useful formulas include h₃o⁺=10⁻ᵖᴴ, oh⁻=10⁻ᵖᴼᴴ, ph + poh = 14, and h₃o⁺oh⁻=10⁻¹⁴. 1.58×10⁻¹² m 6.31×10⁻³ m 2.20 m 158 m

Answer

Explanation:

Step1: Calcular pOH

Dado que pH + pOH = 14 y pH = 11.8, entonces pOH = 14 - pH. pOH = 14 - 11.8 = 2.2

Step2: Calcular concentración de OH⁻

Usando la fórmula [OH⁻]=10⁻pOH, sustituimos pOH = 2.2. [OH⁻]=10⁻².² [OH⁻]=6.31×10⁻³ M

Answer:

6.31×10⁻³ M