Interpretation:
An explanation corresponding to the fact that the rinsing of glassware with acetone removes the remaining water in washed laboratory glassware is to be stated.
Concept introduction:
The partial electrostatic forces of attraction that exists between hydrogen atom and any covalently bonded electronegative atom like oxygen atom is known as hydrogen bonding. The attractive dipolar forces between the molecules results in hydrogen bonds.
Hydrogen bonding can be of two types; one is intramolecular hydrogen bonding and second is intermolecular hydrogen bonding. The intramolecular hydrogen bonding takes place within the molecule. The intermolecular hydrogen bonding takes place between different two molecules.
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Chapter 14 Solutions
Chemistry for Today: General, Organic, and Biochemistry
- A 2.00-g sample of a large biomolecule was dissolved in 15.0 g carbon tetrachloride. The boiling point of this solution was determined to be 77 .85C. Calculate the molar mass of the biomolecule. For carbon tetrachloride, the boiling-point constant is 5.03C kg/mol, and the boiling point of pure carbon tetrachloride is 76.50C.arrow_forwardA mixture of toluene (bp110.8C) and water is steam distilled. Visual inspection of the distillate reveals that there is a greater volume of toluene than water present, yet water (bp100C) has the higher vapor pressure. Explain this observation.arrow_forwardConsider two hypothetical pure substances, AB(s) and XY(s). When equal molar amounts of these substances are placed in separate 500-mL samples of water, they undergo the following reactions: AB(s)A+(aq)+B(aq)XY(s)XY(aq) a Which solution would you expect to have the lower boiling point? Why? b Would you expect the vapor pressures of the two solutions to be equal? If not, which one would you expect to have the higher vapor pressure? c Describe a procedure that would make the two solutions have the same boiling point. d If you took 250 mL of the AB(aq) solution prepared above, would it have the same boiling point as the original solution? Be sure to explain your answer. e The container of XY(aq) is left out on the bench top for several days, which allows some of the water to evaporate from the solution. How would the melting point of this solution compare to the melting point of the original solution?arrow_forward
- If l-mol samples of urea, a nonelectrolyte, sodium chloride, and calcium chloride are each dissolved in equal volumes of water in separate containers: a Which solution would have the highest boiling point? b Which solution would have the highest freezing point?arrow_forwardIn the distillation of a pure substance (e.g., water), why does all of the water not vaporize at once when the boiling point is reached?arrow_forwardInfer Dehydration occurs when more fluid is lost from the body than is taken in. Scuba divers are advised to hydrate their bodies before diving. Use your knowledge of the relationship between pressure and gas solubility to explain the importance of hydration prior to a dive.arrow_forward
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