What is the osmolarity of each of the following solutions? 1.0 M KNO_3 1.0 MK_2S

Question

What is the osmolarity of each of the following solutions? 1.0 M KNO_3 1.0 MK_2SO_4 1.0 M in both KNO_3 and Na_2SO_4 1.0 M in both KNO_3 and glucose Classify each of the following solutions as hypotonic, isotonic, or hypertonic relative to red blood cells? 0.92%(m/v) glucose solution 0.92%(m/v) NaCI solution 2.3%(m/v) glucose solution 5.0%(m/v) NaCI solution Classify each of the following solutions as hypotonic, isotonic, or hypertonic relative to red blood cells? 0.80%(m/v) NaCI solution 1.20%(m/v) NaCI solution 5.0%(m/v) glucose solution 6.0%(m/v) glucose solution Will red blood cells swell, remain the same size, or shrink when placed in each of the solutions in Problem 8-101. Will red blood cells swell, remain the same size, or shrink when placed in each of the solutions in Problem 8-102? Will red blood cells crenate, hemolyze, or remain unaffected when placed in each of the solutions in Problem 8-101? Will red blood cells crenate, hemolyze, or remain unaffected when placed in each of the solutions in Problem 8-102? Classify each of the following solutions as hypotonic, isotonic, or hypertonic relative to red blood cells? 0.28 M glucose 0.28 M in both glucose and sucrose 0.14 M in both glucose and sucrose 0.28 M NaCI Classify each of the following solutions as hypotonic, isotonic, or hypertonic relative to red blood cells? 0.28 M lactose 0.28 M in both lactose and sucrose 0.14 M in both lactose and sucrose 0.28 M KCI Will red blood cells swell, remain the same size, or shrink when placed in each of the solutions in Problem 8-107? Will red blood cells swell, remain the same size, or shrink when placed in each of the solutions in Problem 8-108?

Explanation / Answer

102)

0.9 % mass / volume NaCl solution is called normal saline solution which has same osmatic pressure as blood (isotonic with blood)

The solution whose % of m/v of NaCl > 0.9 %, water will flow out of the cells and they would shrink(Plasmolysis). Such a solution is called hypertonic.

If the mass/volume % NaCl solution is < 0.9 %, water will flow into the cells and they would swell (Haemolysis) . Such a solution is called hypotonic.

(a) Hypotonic

(b) Hypertonic

(c) Conc. of NaCl in 0.9 % solution = (0.9/58.5) * (1000/100) = 0.154 M

0.154 M solution can produce = 2 * 0.154 = 0.308 M of particles

conc. of 5.0 % glucose solution = (5.0 / 180 ) * (1000 / 100 ) = 0.278 M

And 0.278 M glucose solution can produce o.278 M particles only.

0.278 < 0.308 hence, hypotonic

(d) conc. of 6.0 % glucose solution = (6.0/180) * (1000/100) = 0.333 M

0.333 > 0.308 hence the solution is hypertonic

104)

(a) and (c) swell

(b) and (d) shrink

(106)

(a) and (c) haemolyse

(b) and (d) Crenate

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