Chemistry (12th Edition)

Published by Prentice Hall
ISBN 10: 0132525763
ISBN 13: 978-0-13252-576-3

Chapter 20 - Oxidation-Reduction Reactions - 20 Assessment: 96

Answer

All three test tubes contain a saturated solution of BaSO4. The addition of either barium or sulfate ions will shift the reaction to the left, causing BaSO4 to precipitate out of the saturated solution. This is called the common ion effect. The addition of NaCI, which, having no common ions with BaSO4, would have no effect on the solution. Choices a and c show a precipitate forming. Only b remains unchanged. So, b is the correct answer.

Work Step by Step

All three test tubes contain a saturated solution of BaSO4. The addition of either barium or sulfate ions will shift the reaction to the left, causing BaSO4 to precipitate out of the saturated solution. This is called the common ion effect. The addition of NaCI, which, having no common ions with BaSO4, would have no effect on the solution. Choices a and c show a precipitate forming. Only b remains unchanged. So, b is the correct answer.
Update this answer!

You can help us out by revising, improving and updating this answer.

Update this answer

After you claim an answer you’ll have 24 hours to send in a draft. An editor will review the submission and either publish your submission or provide feedback.