Below are four solutions each containing the following substances of different c
ID: 3515237 • Letter: B
Question
Below are four solutions each containing the following substances of different concentrations (read left to right): KCl, Glucose, Urea, and NaCl. Answer the following questions:
NOTE: Potassium Chloride (KCl) dissociates in solution.
CONCENTRATION [M]
SOLUTION
KCl
GLUCOSE
UREA
NaCl
A
5
5
5
2
B
5
10
1
4
C
2
5
5
1
D
2
5
5
5
a) Which of the following two solutions are isoosmotic to each other?
b) Which of the following solutions has the highest water concentration?
c) Which of the following solutions has the highest solute concentration?
CONCENTRATION [M]
SOLUTION
KCl
GLUCOSE
UREA
NaCl
A
5
5
5
2
B
5
10
1
4
C
2
5
5
1
D
2
5
5
5
Explanation / Answer
Answer a. Solution A and solution D are iso osmotic to each other because the total concentration of different substrate is same in both solutions. The osmolality of the solution is measured by total concentration of the substrate in the solution.
Answer b. Solution C has highest water concentration because it has lowest substrate. The water content of this solution will be more in comparison to other given solutions.
Answer c. Solution B has highest solute concentration because the combined total concentration of glucose and urea is more in solution B in comparison to that in solution A, C and D.
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