General Chemistry 10th Edition

Published by Cengage Learning
ISBN 10: 1-28505-137-8
ISBN 13: 978-1-28505-137-6

Chapter 17 - Solubility and Complex-Ion Equilibria - Questions and Problems - Page 733: 17.2

Answer

Please see the work below.

Work Step by Step

We know that calcium sulfate is less soluble in a solution having sodium sulfate as the increase in sulfate from the sodium sulfate results in the equilibrium composition. Hence, decrease in calcium decreases the calcium ion in concentration and decreases the solubility of calcium sulfate.
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