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Lesson 2 Ion Concentration + Formulas

Lesson 2 Ion Concentration + Formulas. Ion concentrations in solutions. Since salts will dissociate into ions when dissolved, we must learn how to calculate ion concentrations in a solution. very similar to our Equilibrium calculations from unit 2.

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Lesson 2 Ion Concentration + Formulas

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  1. Lesson 2 Ion Concentration + Formulas

  2. Ion concentrations in solutions • Since salts will dissociate into ions when dissolved, we must learn how to calculate ion concentrations in a solution. • very similar to our Equilibrium calculations from unit 2. • we still need mole ratios from the equation.

  3. What is the concentration of each ion in 2.0 L of a 0.300 M AlCl3 solution? AlCl3(s) Al3+ + 3Cl- 0.300 M 0.300 M 0.900 M

  4. Try: What is the concentration of all ions present in a saturated solution of Ag2CO3 having a concentration of 1.2 x 10 -4 M?

  5. What is the concentration of each ion in the solution formed by dissolving 80.0 g of CaCl2 in 600.0 mL of water? 1 mole 80.0 g x 111.1 g Molarity = moles L = 1.20 M 0.600 L CaCl2 Ca2+ + 2Cl- 1.20 M 1.20 M 2.40 M

  6. Dilutions!If 5.0mL of 0.020 M Cl-1 is added to 15.0 mL of 0.012 M Br-1, what is the molarity of the Cl-1 and Br-1 ions in the mixture?

  7. Try… If 4.0mL of 0.1M I-1 is added to 16.0 mL of 0.02 M Cl-1, what is the molarity of the Cl-1 and I-1 ions in the mixture?

  8. If 40.0 mL of 0.400 M AlCl3 solution is added to 60.0 mL of 0.600 M CaCl2 solution, what is the resulting concentration of all ions? AlCl3 Al3+ + 3Cl- 0.480 M 40.0 x 0.400 M 0.160 M 100.0 CaCl2 Ca2+ + 2Cl- 60.0 x 0.720 M 0.600 M 0.360 M 100.0 [Cl-] = 0.480 + 0.720 M = 1.200 M

  9. Try… If 30.0 mL of 0.300 M AlBr3solution is added to 70.0 mL of 0.700 M CaBr2 solution, what is the resulting concentration of all ions?

  10. If the [Cl-] = 0.600 M, calculate the number of grams AlCl3that would be dissolved in 3.00 L of water. AlCl3 Al3+ + 3Cl- 0.200 M 0.200 M 0.600 M 0.200 mole x 133.5 g = 80.1 g 3.00 L x 1 L 1 mole

  11. Try… If the [Cl-] = 0.200 M, calculate the number of grams MgCl2that would be dissolved in 2.00 L of water.

  12. Writing formula equationcomplete ionic equation andnet ionic equations

  13. Write the formula, complete, and net ionic equation for the reaction which occurs when 0.2 M solutions of Pb(NO3)2 (aq) and FeCl3(aq) are mixed.

  14. Try: Write the formula, complete, and net ionic equation for the reaction which occurs when 0.2 M solutions of magnesiumsulphide and strontium hydroxide are mixed.

  15. Homework Hebden: pg. 78 #12, 13,14 pg. 81 #18, 19, and 20 (a, c, f, h)

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