Notice that the concentrations of NaCl and K_2 SO_4 given in this problem are ch

Question

Notice that the concentrations of NaCl and K_2 SO_4 given in this problem are changed from the concentrations of problems 5 and 6. Normal physiological saline is 0.15 M NaCl. Please calculate, or circle the appropriate answer, below. The osmolarity of Physiological Saline is osmol. The osmolarity of 0.20 M NaCl is osmol. 0.20 M NaCl is hypotonic hypertonic isotonic If placed in 0.20 M NaCl red blood corpuscles will remain normal crenate hemolyse The osmolarity of 0.10 M K_2 SO_4 is hypotonic hypertonic isotonic If placed in 0.10 M K_2 SO_4 red blood corpuscles will remain normal crenate hemolyse

Explanation / Answer

(8)

a) osmolarity of physiological saline = 2 x 0.15 = 0.30 Osm/L

b) the osmolarity of 0.20 M NaCl = 2 x 0.20 = 0.40 Osm/L

O.20 M NaCl is hypertonic

red blood cell will crenate

c)

The osmolarity of 0.10 M K2SO4 = 3 x 0.10 = 0.30 Osm/L

0.10 M K2SO4 is isotonic with physiological saline

red blood cell will remain normal

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