Concept explainers
(a)
Interpretation:
The solution that contains
Concept introduction:
The term unsaturated is used for the solution in which more solute can be added. The term saturated is used for the solution in which no more solute can be added. The term supersaturated is used for the solution in which solute is added more than its solubility.
(b)
Interpretation:
The solution that contains
Concept introduction:
The term unsaturated is used for the solution in which more solute can be added. The term saturated is used for the solution in which no more solute can be added. The term supersaturated is used for the solution in which solute is added more than its solubility.
(c)
Interpretation:
The solution that contains
Concept introduction:
The term unsaturated is used for the solution in which more solute can be added. The term saturated is used for the solution in which no more solute can be added. The term supersaturated is used for the solution in which solute is added more than its solubility.
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Introductory Chemistry: Concepts and Critical Thinking (8th Edition)
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- 6-70 In winter, after a snowstorm, salt (NaCI) is spread to melt the ice on roads. How many grams of salt per 1000. g of ice is needed to make it liquid at-5°C?arrow_forwardConsider three test tubes. Tube A has pure water. Tube B has an aqueous 1.0 m solution of ethanol, C2H5OH. Tube C has an aqueous 1.0 m solution of NaCl. Which of the following statements are true? (Assume that for these solutions 1.0m=1.0M.) (a) The vapor pressure of the solvent over tube A is greater than the solvent pressure over tube B. (b) The freezing point of the solution in tube B is higher than the freezing point of the solution in tube A. (c) The freezing point of the solution in tube B is higher than the freezing point of the solution in tube C. (d) The boiling point of the solution in tube B is higher than the boiling point of the solution in tube C. (e) The osmotic pressure of the solution in tube B is greater than the osmotic pressure of the solution in tube C.arrow_forwardConcentrated hydrochloric acid contains 1.00 mol HCl dissolved in 3.31 mol H2O. What is the mole fraction of HCl in concentrated hydrochloric acid? What is the molal concentration of HCl?arrow_forward
- Instead of using NaCl to melt the ice on your sidewalk you decide to use CaCl2. If you add 35.0 g of CaCl2 to 150. g of water, what is the freezing point of the solution? (Assume i = 2.7 for CaCl2.)arrow_forwardYou have read that adding a solute to a solvent can both increase the boiling point and decrease the freezing point. A friend of yours explains it to you like this: The solute and solvent can be like salt in water. The salt gets in the way of freezing in that it blocks the water molecules from joining together. The salt acts like a strong bond holding the water molecules together so that it is harder to boil. What do you say to your friend?arrow_forwardSodium chloride (NaCl) is commonly used to melt ice on roads during the winter. Calcium chloride (CaCl2) is sometimes used for this purpose too. Let us compare the effectiveness of equal masses of these two compounds in lowering the freezing point of water, by calculating the freezing point depression of solutions containing 200. g of each salt in 1.00 kg of water. (An advantage of CaCl2 is that it acts more quickly because it is hygroscopic, that is. it absorbs moisture from the air to give a solution and begin the process. A disadvantage is that this compound is more costly.)arrow_forward
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