A 10-g quantity of a compound is dissolved in 100 g of water. The solution formed has a melting point of −14°C. Is the compound KCl, Na2S, or Na3PO4?
A 10-g quantity of a compound is dissolved in 100 g of water. The solution formed has a melting point of −14°C. Is the compound KCl, Na2S, or Na3PO4?
General Chemistry - Standalone book (MindTap Course List)
11th Edition
ISBN:9781305580343
Author:Steven D. Gammon, Ebbing, Darrell Ebbing, Steven D., Darrell; Gammon, Darrell Ebbing; Steven D. Gammon, Darrell D.; Gammon, Ebbing; Steven D. Gammon; Darrell
Publisher:Steven D. Gammon, Ebbing, Darrell Ebbing, Steven D., Darrell; Gammon, Darrell Ebbing; Steven D. Gammon, Darrell D.; Gammon, Ebbing; Steven D. Gammon; Darrell
Chapter4: Chemical Reactions
Section4.7: Molar Concentration
Problem 4.10E: A sample of sodium chloride, NaCl, weighing 0. 0678 g is placed in a 25.0-mL volumetric flask....
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Exercise 1
- A 10-g quantity of a compound is dissolved in 100 g of water. The solution formed has a melting point of −14°C. Is the compound KCl, Na2S, or Na3PO4?
- An aqueous solution of a nonelectrolyte is made by dissolving the solute in 1 L of water. The solution has a freezing point of −5°C. What volume of water must be added to change the freezing point to −1.15°C?
- 100 mL of a solution of physiological saline (0.92% NaCl by mass) is diluted by the addition of 250 mL of water. What is the osmotic pressure of the final solution at 37°C? Assume that NaCl dissociates completely into Na+(aq) and Cl–(aq).
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