1 / 18

Assignment #70 Solubility Equilibria

Assignment #70 Solubility Equilibria. Solubility. Everything Is Soluble The question is to what extent. Degrees of Solubility: Soluble Slightly Soluble Insoluble Negligible Amount. Dissolving Ionic Compounds. Write the equations that depicts solid calcium sulfate dissolving in water.

luther
Download Presentation

Assignment #70 Solubility Equilibria

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Assignment #70Solubility Equilibria Regular Chemistry

  2. Solubility • Everything Is Soluble • The question is to what extent. • Degrees of Solubility: • Soluble • Slightly Soluble • Insoluble • Negligible Amount Regular Chemistry

  3. Dissolving Ionic Compounds • Write the equations that depicts solid calcium sulfate dissolving in water. • CaSO4(s.) Regular Chemistry

  4. Dissolving Ionic Compounds • Write the equations that depicts solid calcium sulfate dissolving in water. • CaSO4(s.) Ca2+(aq.) + SO42-(aq.) • Dissolution • All Reactions Are Reversible • Ca2+(aq.) + SO42-(aq.) CaSO4(s.) • Precipitation • Correct equation for the dissolution of calcium sulfate? Regular Chemistry

  5. Dissolving Ionic Compounds • Write the equations that depicts solid calcium sulfate dissolving in water. • CaSO4(s.) Ca2+(aq.) + SO42-(aq.) • Dissolution • All Reactions Are Reversible • Ca2+(aq.) + SO42-(aq.) CaSO4(s.) • Precipitation • CaSO4(s.) Ca2+(aq.) + SO42-(aq.) Regular Chemistry

  6. Equilibrium • CaSO4(s.) Ca2+(aq.) + SO42-(aq.) • Balance between dissolution and precipitation. • At equilibrium there are ions in solution and undissolved solute present at the same time. • Equilibrium occurs when the solution is saturated. Regular Chemistry

  7. Solubility Product • Equilibrium expression for dissolution. • CaSO4(s.) Ca2+(aq.) + SO42-(aq.) Regular Chemistry

  8. Solubility Product • Equilibrium expression for dissolution. • CaSO4(s.) Ca2+(aq.) + SO42-(aq.) • Ksp is Constant for Solubility Product. • Special type of equilibrium. • At 25.0°C, the maximum concentration of calcium sulfate is 0.0049M. Find Ksp. • Maximum concentration means saturated. In other words, the process is at equilibrium. Regular Chemistry

  9. Solubility Product • Equilibrium expression for dissolution. • CaSO4(s.) Ca2+(aq.) + SO42-(aq.) • Ksp is Constant for Solubility Product. • Special type of equilibrium. • At 25.0°C, the maximum concentration of calcium sulfate is 0.0049M. Find Ksp. • Ksp = 2.4x10-5 Regular Chemistry

  10. Solubility Product • At 25.0°C, 3.27 grams of lead (II) bromide can dissolve in 850 milliliters of solution. Find Ksp. • PbBr2(s.) Regular Chemistry

  11. Solubility Product • At 25.0°C, 3.27 grams of lead (II) bromide can dissolve in 850 milliliters of solution. Find Ksp. • PbBr2(s.) Pb2+(aq.) + 2 Br1-(aq.) • Ksp = 4.6x10-6 Regular Chemistry

  12. Solubility Product • At 25.0°C, find the maximum concentration of silver chloride. • Need Ksp • Table on Page 566 • AgCl(s.) Ag1+(aq.) + Cl1-(aq.) Regular Chemistry

  13. Solubility Product • At 25.0°C, find the maximum concentration of silver chloride. • Need Ksp • Table on Page 566 • AgCl(s.) Ag1+(aq.) + Cl1-(aq.) • 1.3x10-5M Regular Chemistry

  14. Solubility Product • At 25.0°C, what mass of zinc hydroxide can dissolve in 100. milliliters of solution? • Zn(OH)2(s.) Zn2+(aq.) + 2 OH1-(aq.) Regular Chemistry

  15. Solubility Product • At 25.0°C, what mass of zinc hydroxide can dissolve in 100. milliliters of solution? • Zn(OH)2(s.) Zn2+(aq.) + 2 OH1-(aq.) Regular Chemistry

  16. Solubility Product • At 25.0°C, what mass of zinc hydroxide can dissolve in 100. milliliters of solution? • Zn(OH)2(s.) Zn2+(aq.) + 2 OH1-(aq.) • 2.2x10-5g Regular Chemistry

  17. Summary • Everything Is Soluble! • Equilibria Dissolving Ionic Compounds. • Form a Saturated Solution • Dissolution • Precipitation • Solubility Product Regular Chemistry

  18. Tonight's Assignment Regular Chemistry

More Related