Question

The total concentration of dissolved particles inside red blood cells is approximately 0.30 M and the membrane surrounding the cells is semipermeable. What would the osmotic pressure (in atmosphere) inside the cells become if cells were removed from the blood plasma and placed in pure water at 298 K ?

• A. 7.34 atm
• B. 1.78 atm
• C. 2.34 atm
• D. 0.74 atm

Answer 1

The correct option is A 7.34 atm

Concentration of Red blodd cell $C=0.30M$

$R=0.0821$

$T=298k$

Osmotic pressure $T_i$ $=CRT$

$=0.3$ $\times$ $0.0821$ $\times$ $298$

$=7.33979$ $\simeq$ $7.34$atm