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Solubility Water HOT A B AFTER Before Water COLD Water HOT Add 1 drop of red food coloring Miscible – mixable two gases or two liquids that mix evenly.

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Presentation on theme: "Solubility Water HOT A B AFTER Before Water COLD Water HOT Add 1 drop of red food coloring Miscible – mixable two gases or two liquids that mix evenly."— Presentation transcript:

1 Solubility Water HOT A B AFTER Before Water COLD Water HOT Add 1 drop of red food coloring Miscible – mixable two gases or two liquids that mix evenly Experiment 1: Water COLD A B

2 Solubility Water Oil T 30 sec AFTER Before Add oil to water and shake Immiscible – does not mix two liquids or two gases that DO NOT MIX Experiment 2: T 0 sec

3 Solubility SATURATED SOLUTION no more solute dissolves UNSATURATED SOLUTION more solute dissolves SUPERSATURATED SOLUTION becomes unstable, crystals form increasing concentration

4 Solubility Solids are more soluble at...Solids are more soluble at... –high temperatures. Gases are more soluble at...Gases are more soluble at... –low temperatures & –high pressures (Henrys Law). –EX: nitrogen narcosis, the bends, soda

5 ToTo Sol. ToTo Solids dissolved in liquids Gases dissolved in liquids As T o, solubility

6 Solubility vs. Temperature Timberlake, Chemistry 7 th Edition, page 297 KI NaNO 3 KNO 3 Na 3 PO 4 NaCl Temperature ( o C) Solubility (g solute / 100 g H 2 O)

7 Gas Solubility CH 4 O2O2 CO He Temperature ( o C) Solubility (mM) Higher Temperature …Gas is LESS Soluble

8 Pure water does not conduct an electric current Zumdahl, Zumdahl, DeCoste, World of Chemistry 2002, page 215 Source of electric power Pure water

9 Ionic Solutions conduct a Current Zumdahl, Zumdahl, DeCoste, World of Chemistry 2002, page 215 Source of electric power Free ions present in water

10 Electrolytes Copyright © 2007 Pearson Benjamin Cummings. All rights reserved. (a) Nonelectrolyte (b) Weak electrolyte (c) Strong electrolyte

11 Electrolytes Timberlake, Chemistry 7 th Edition, page 290 Electrolytes Electrolytes - solutions that carry an electric current NaCl(aq) Na + + Cl - HF(aq) H + + F - strong electrolyteweak electrolytenonelectrolyte

12 Solution, Suspension, Colloid Timberlake, Chemistry 7 th Edition, page 309

13 Tyndall Effect Put a beam of light through a mixture Reflection of light off undissolved particles A) Solution - no Tyndall effect- cant see the beam B) Suspensions - sparkle off big particles C) Colloids – continuous beam A B C

14 Copyright © 2007 Pearson Benjamin Cummings. All rights reserved.


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