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Chemistry

9th Edition
Steven S. Zumdahl
ISBN: 9781133611097

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Section
BuyFindarrow_forward

Chemistry

9th Edition
Steven S. Zumdahl
ISBN: 9781133611097
Textbook Problem

The Ksp of Al(OH)3 is 2 × 10–32. At what pH will a 0.2-M Al3+ solution begin to show precipitation of Al(OH)3?

Interpretation Introduction

Interpretation:

The given solution begin to show precipitate has to be calculated.

Concept introduction:

  • pH is a calculate of hydrogen ion concentration; a determine of the acidity or alkalinity of a solution.
  • Aqueous solutions at 25°C with a pH less than seven are acidic, whilst those with a  pH greater than seven are basic or alkaline.
Explanation

Write the dissociation equation

Al(OH)3Al3++3OH-

The Ksp expression

Ksp=[Al3+][3OH-]32.0×10-32=(0

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