8-100 What is the osmolarity of each of the following solutions? a. 1.0 M KNO, b

Question

8-100 What is the osmolarity of each of the following solutions? a. 1.0 M KNO, b. 1.0 M K SO c. 1.0 M in both KNO, and Na,SO d. 1.0 M in both KNO, and glucose 8-101 Classify each of the following solutions as hypotonic isotonic, or hypertonic relative to red blood cells? a. 0.92%(m/v) glucose solution b, 0.92%(m/v) NaCl solution c. 2.3%(m/v) glucose solution d. 5.0%m/v) NaCI solution 8-102 Classify each of the following solutions as hypotonic isotonic, or hypertonic relative to red blood cells a. 0.80%(m/v) NaCl solution b. 1.20%(m/v) NaCl solution c. 5.0%(m/v) glucose solution d. 6.0%( m/v) glucose solution 8-103 Will red blood cells swell, remain the same size, or shrink 8-104 Will red blood cells swell, remain the same size, or shrink 8-105 Will red blood cells crenate, hemolyze, or remain unaffected 8-106 Will red blood cells crenate, hemolyze, or remain unaffected 8-107 Classify each of the following solutions as hypotonic when placed in each of the solutions in Problem 8-101? when placed in each of the solutions in Problem 8-102? when placed in each of the solutions in Problem 8-101? when placed in each of the solutions in Problem 8-102? isotonic, or hypertonic relative to red blood cells? a. 0.28 M glucose b. 0.28 M in both glucose and sucrose c. 0.14 M in both glucose and sucrose d. 0.28 M NaC 8-108 Classify each of the following solutions as hypotonic, isotonic, or hypertonic relative to red blood cells? a. 0.28 M lactose b. 0.28 M in both lactose and sucrose c. 0.14 M in both lactose and sucrose d. 0.28 M KC 8-109 Will red blood cells swell, remain the same size, or shrink 8-109 Will red blood cells swell remain the same size, or shrink when placed in each of the solutions in Problem 8-1072 8-110 Will red blood cells swell, remain the same size, or shrink when placed in each of the solutions in Problem 8-108?

Explanation / Answer

In the question , Osmolarity must be refferring to the molarity of total ions prsent in the solution that is van'thoff factor x molarity.

Q1)

a) 1.oM KNO3 solution

KNO3 ------> K+ + NO3- (2 ions )

Thus osmolarity is 2M

b) 1M K2SO4

K2SO4 --------> 2K+  + SO4-   (3 ions)

Thus osmolarity = 3M

c) solution containing 1M each of KNO3 and Na2SO4

Total they give 5 ions (2+3)

Thus osmolarity is 5M

d) solution containing 1M KNO3 and 1M glucose

glucose is non-electrolyte

Thus number of particles = 2+1 = 3

osmolarity = 3M

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