Salts and Solubility Activity 2 Learning Goals: Students will be able to: Write the dissolving reaction for salts Describe a saturated solution microscopically.

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Salts and Solubility Activity 2 Learning Goals: Students will be able to: Write the dissolving reaction for salts Describe a saturated solution microscopically and macroscopically with supporting illustrations Calculate solubility in grams/100ml Distinguish between soluble salts and slightly soluble salts macroscopically. Trish Loeblein July 2008

1. Which is correct for dissolving barium iodide in water ? A.BaI 2(s)  Ba (aq) + 2I (aq) B.BaI (s)  Ba (aq) + I (aq) C.BaI 2(s)  Ba +2 (aq) + 2I - (aq) D.BaI 2  Ba I -

2. Sue used Salts to learn about “saturated solution”. Which image best shows a saturated solution? A C D B

A B C D 3. Waldo added salt to a test tube of water to learn about “saturated solution”. Which image best shows a saturated solution?

4. If you used the sim to test silver chloride, you would see 80 Ag + ions dissolved in 1E-17 liters. What is the solubility in 100 ml of water? A grams/100 ml water B grams/100 ml water C grams/100 ml water D grams/100 ml water

The calculation for AgCl example: 80 AgCl /6.02E23 AgCl/mole) *(143.5grams/mole) = 2.4E –20 grams 1.9E –20 grams/(1E-17L) =.0019 grams/L.0019 grams/L*.1L/100ml = g/100ml B

5. You knew a salt was either sodium chloride or silver chloride. If you put 1 gram in 10 ml of water in a test tube, and it looked like this A.Sodium chloride B.Silver Chloride C.This is not an identifying test Which is it?