the ph of a solution is 2.0. which statement is correct? useful formulas include h₃o⁺=10⁻ph, oh⁻=10⁻poh, ph…

the ph of a solution is 2.0. which statement is correct? useful formulas include h₃o⁺=10⁻ph, oh⁻=10⁻poh, ph + poh = 14, and h₃o⁺oh⁻=10⁻¹⁴. the poh of the solution is 12.0. the concentration of oh⁻ ions is 1.0×10⁻² m. the concentration of h₃o⁺ ions is 100.0 m. the poh of the solution is 16.0.

the ph of a solution is 2.0. which statement is correct? useful formulas include h₃o⁺=10⁻ph, oh⁻=10⁻poh, ph + poh = 14, and h₃o⁺oh⁻=10⁻¹⁴. the poh of the solution is 12.0. the concentration of oh⁻ ions is 1.0×10⁻² m. the concentration of h₃o⁺ ions is 100.0 m. the poh of the solution is 16.0.

Answer

Explanation:

Step1: Recall pH - pOH relationship

Given $pH + pOH=14$.

Step2: Calculate pOH

Substitute $pH = 2.0$ into the formula $pOH=14 - pH$. So, $pOH=14 - 2.0=12.0$.

Step3: Analyze other options

  • For the concentration of $H_3O^+$ ions, using $[H_3O^+]=10^{-pH}$, when $pH = 2.0$, $[H_3O^+]=10^{- 2.0}=0.01M$.
  • For the concentration of $OH^-$ ions, since $pOH = 12.0$, using $[OH^-]=10^{-pOH}$, $[OH^-]=10^{-12.0}M$.

Answer:

The pOH of the solution is 12.0.