Osmosis depends on the total concentration of solute particles. If a compound ionizes, the osmosis effect will be greate

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Osmosis Depends On The Total Concentration Of Solute Particles If A Compound Ionizes The Osmosis Effect Will Be Greate 1 (50.89 KiB) Viewed 64 times

Osmosis depends on the total concentration of solute particles. If a compound ionizes, the osmosis effect will be greater than the molarity would indicate. For example, 1 M Na S behaves like it's 3 M because I mole Na Sionizes to produce 2 moles Na and 1 moles, Nags → 2Na+ s since 1 mole of Na:S produces a total of 3 moles of ions, 1 M Na:S has an effective strength of 3 M. We would say that I M Na S has an osmosis molarity or "osmolarity" of 3 M. Questions 1. Calculate the "osmolarity of the following solutions. (All solutions are strong electrolytes and fully ionize in water.) a) 1 M NACI d) 0.5 M Na PO b) I M MgCl2 c) 0,6 M NaNO c) 0,4 M AICI 1) 0.3 M Ca(NO) 2. When osmosis occurs, water flows from a "hypotonic" solution into a "hypertonic" solution. If no osmosis occurs, the solutions are called "isotonic." Identify the following solutions as hypertonic, hypotonic or isotonic as compared to 0.30 M glucose. (Glucose does not ionize, it is a nonelectrolyte.) a) 0.2 M NaCI d) 0.15 M KCI b) 0.1 M Caci: c) 0,1 M FCI, c) 0,1 M NaNO 190.1 M Na:SO 3. Which of the following solutions is isotonic (no osmosis) with a 0.30 M NaNO, solution? fhint - Find the osmosis molarity or "osmolarity* = (#ions) a) 0.10 M CaCl2 b) 0.30 M glucose c) 0.60 M NaCl d) 0.15 M AICI, e) 0.75 M KCI (no ionization for glucose) 4. Circle the solutions that are isotonic (no osmosis) with a 0.20 M Naso solution (mark all correct answer) 0.3 M NaNO, 0.40 M MgCl; 0.10 M KCI 0.15 M FCI 5. If a solution of 0.20 M Mg(NO), is separated from a 0.25 M KCl solution by a membrane that is permeable to water, osmosis will occur. Describe the osmotic flow. (What is flowing? In which direction? 6. A solution of 0.15 M NaCl is “isotonic" with body fluids (no osmosis occurs). Calculate the osmotic pressure of a 0.15 M NaCl solution at body temperature of 37° Celsius. Given: Osmotic pressure, a=nMRT, where n = #ions, M=molarity, & R -0.0821 liter atm/mole K. n