О Help Discussions List > View Topic Settings Solution_Chemistry CH.8 Unlocked: Monday, February 8, 2021 12:00 AM CST - Friday, February 12, 2021 11:30 PM CST. Must post i ser Subscribe 1. If you have a solid solute dissolving in a liquid solvent: a) Name the 3 things that will increase the RATE of solution formation. b) What are the 2 things you change for the reaction conditions if the solute was a gas to increase the solubility? 2a. Calculate the %(m/m) of 86.9g KBr dissolved in 550. g H20. 2b. Calculate the %(m/m) be if the KBr was dissolved to make a 550.g solution instead? 3a. What is the Molarity of a solution made by dissolving 7.65g Ca(OH)2 in 750.mL solution: 3b. In addition, what is the Osmolarity of this solution? Start a New Thread Sort by: Filter by: All Threads v Most Recent Activity
О Help Discussions List > View Topic Settings Solution_Chemistry CH.8 Unlocked: Monday, February 8, 2021 12:00 AM CST - Friday, February 12, 2021 11:30 PM CST. Must post i ser Subscribe 1. If you have a solid solute dissolving in a liquid solvent: a) Name the 3 things that will increase the RATE of solution formation. b) What are the 2 things you change for the reaction conditions if the solute was a gas to increase the solubility? 2a. Calculate the %(m/m) of 86.9g KBr dissolved in 550. g H20. 2b. Calculate the %(m/m) be if the KBr was dissolved to make a 550.g solution instead? 3a. What is the Molarity of a solution made by dissolving 7.65g Ca(OH)2 in 750.mL solution: 3b. In addition, what is the Osmolarity of this solution? Start a New Thread Sort by: Filter by: All Threads v Most Recent Activity
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
Chapter1: Chemical Foundations
Section: Chapter Questions
Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...
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1. If you have a solid solute dissolving in a liquid solvent:
a) Name the 3 things that will increase the RATE of solution formation.
b) What are the 2 things you change for the reaction conditions if the solute was a gas to
increase the solubility?
2a. Calculate the %(m/m) of 86.9g KBr dissolved in 550. g H20.
2b. Calculate the %(m/m) be if the KBr was dissolved to make a 550.g solution instead?
3a. What is the Molarity of a solution made by dissolving 7.65g Ca(OH)2 in 750.mL solution:
3b. In addition, what is the Osmolarity of this solution?
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Expert Solution
Step 1
a)
- Strong attractive forces between the solvent and solute particles lead to greater solubility.
Thus, polar solutes dissolve best in polar solvents. Nonpolar solutes dissolve best in nonpolar solvents. A polar solute is insoluble in a nonpolar solvent and vice versa.
"Like Dissolves Like".
.TEMPERATURE
When we add heat to a substance, the kinetic energy of the molecules increases. The more energetic solvent molecules can overcome the attractive forces among solute particles. The solute particles leave the surface of the solid and move into the liquid phase (dissolve).
Thus, increasing the temperature usually increases the solubilities of substances. For example, sugar is more soluble in water at higher temperatures.
- Increasing the surface area of the solute will increase the rate of dissolving.
- There is no effect of pressure on solubility of solid into liquid.
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