of water. Write TRUE if the statement is correct but if it Is False, change the underlined word or group of words to make the whole statement true. Write your answers on the space provided. 7. The bond that holds each water molecule with the adjacent water molecule is a hydrogen bond. 8. Substances that are polar and ready to be dissolved in water are called hydrophobic. 9. The type of intermolecular force which is a polar covalent bond makes the water polar and explains why water is a universal solvent.

of water. Write TRUE if the statement is correct but if it Is False, change the underlined word or group of words to make the whole statement true. Write your answers on the space provided. 7. The bond that holds each water molecule with the adjacent water molecule is a hydrogen bond. 8. Substances that are polar and ready to be dissolved in water are called hydrophobic. 9. The type of intermolecular force which is a polar covalent bond makes the water polar and explains why water is a universal solvent.

Chemistry: Principles and Reactions

8th Edition

ISBN:9781305079373

Author:William L. Masterton, Cecile N. Hurley

Publisher:William L. Masterton, Cecile N. Hurley

Chapter10: Solutions

Section: Chapter Questions

Problem 79QAP: In your own words, explain (a) why seawater has a lower freezing point than fresh water. (b) why one...

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Refer to Figure 11.12 to answer these questions: (a) You heat some water to 60 C in a lightweight plastic bottle and seal the top very tightly so gas cannot enter or leave the carton. What happens when the water cools? (b) If you put a few drops of liquid diethyl ether on your hand, does it evaporate completely or remain a liquid? Figure 11.12 Vapor pressure curves for diethyl ether [(C2H3)2O], ethanol (C2H5OH), and water. Each curve represents conditions of T and P of which the two phases, liquid and vapor, are in equilibrium. These compounds exist as liquids for temperatures and pressures to the left of the curve and as gases under conditions to the right of the curve. (See Appendix G for vapor pressures for water of various temperatures.)
In your own words, explain why (a) seawater has a lower freezing point than fresh water. (b) salt is added to the ice in an ice cream maker to freeze the ice cream faster.
In your own words, explain (a) why seawater has a lower freezing point than fresh water. (b) why one often obtains a grainy product when making fudge (a supersaturated sugar solution). (c) why the concentrations of solutions used for intravenous feeding must be controlled carefully. (d) why fish in a lake (and fishermen) seek deep, shaded places during summer afternoons. (e) why champagne fizzes in a glass.
Apply your knowledge of polarity and solubility topredict whether solvation is possible in each situationshown in Table 14.9. Explain your answers.