A 7.0 × 10^-³M aqueous solution of Ca(OH)₂at 25.0 °C has a pH of .

Name: A 7.0 × 10 - 3 M aqueous solution of Ca(OH) 2 at 25.0 °C has a pH of .
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Quizplus · Accepted Answer

Ca(OH)₂ is a strong base and dissociates completely in water. The concentration of OH⁻ ions is twice that of Ca(OH)₂, so [OH⁻] = 2 × 7.0 × 10⁻³ M = 1.4 × 10⁻² M. The pOH is -log(1.4 × 10⁻²) ≈ 1.85. Since pH + pOH = 14, the pH is 14 - 1.85 = 12.15.

A 70 × 10- 3 M Aqueous Solution of Ca(OH)2 at

A 70 × 10^-³M Aqueous Solution of Ca(OH)₂at