What is the osmolarity of each of the following solutions? 1.0 M KNO_3 1.0 M K_2

Question

What is the osmolarity of each of the following solutions? 1.0 M KNO_3 1.0 M K_2 SO_4 1.0 M in both KNO_3 and Na_2 SO_4 1.0 M in both KNO_3 and glucose Classify each of the following solutions as hypotonic, isotonic, or hypertonic relative to red Wood 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 I.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

8-100)
a)
KNO3 ----> K+ + NO3-
osmolarity = 1.0M * 2 = 2.0 M

b)
K2SO4 ---> 2K+ + SO42-
osmolarity = 1.0M * 3 = 3.0 M

c)
KNO3 gives 2 particles and Na2SO4 gives 3 particles
Total 5 ions
osmolarity = 1.0M * 5 = 5.0 M

d)
glucose doesn't dissociate. so 1 particle
KNO3 form 2 particles
Total 3 particles
osmolarity = 1.0M * 3 = 3.0 M

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