Question 32 A student adds 1 mL of oil to 5 mL of distilled water in a test tube labelled X which is stoppered and shaken for 10 seconds and allowed to settle. The experiment is repeated, in a second test tube labelled Y. In addition to the oil and water, 5 drops of soap solution is added before the test tube is shaken. (a) Compare the appearance of the mixtures in test tubes X and Y after they have been shaken and allowed to settle for 10 seconds. (b) Explain how the molecular structure of soap can account for the changes in appearance of the mixtures described in part (a). (c) Assess the suitability of soaps in cases where hard water (containing dissolved salts) is present.
Question 32 A student adds 1 mL of oil to 5 mL of distilled water in a test tube labelled X which is stoppered and shaken for 10 seconds and allowed to settle. The experiment is repeated, in a second test tube labelled Y. In addition to the oil and water, 5 drops of soap solution is added before the test tube is shaken. (a) Compare the appearance of the mixtures in test tubes X and Y after they have been shaken and allowed to settle for 10 seconds. (b) Explain how the molecular structure of soap can account for the changes in appearance of the mixtures described in part (a). (c) Assess the suitability of soaps in cases where hard water (containing dissolved salts) is present.
Chemistry
10th Edition
ISBN:9781305957404
Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Chapter4: Types Of Chemical Reactions And Solution Stoichiometry
Section: Chapter Questions
Problem 47E
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Transcribed Image Text:Question 32
A student adds 1 mL of oil to 5 mL of distilled water in a test tube labelled X
which is stoppered and shaken for 10 seconds and allowed to settle.
The experiment is repeated, in a second test tube labelled Y. In addition to the oil
and water, 5 drops of soap solution is added before the test tube is shaken.
(a) Compare the appearance of the mixtures in test tubes X and Y after they
have been shaken and allowed to settle for 10 seconds.
(b) Explain how the molecular structure of soap can account for the changes in
appearance of the mixtures described in part (a).
(c) Assess the suitability of soaps in cases where hard water (containing
dissolved salts) is present.
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