The average osmotic pressure of human blood is 7.8bar at 310K.What is the concentration of an aqueous NaCl solution that could be used in the blood stream?

1 Answer
Al E.
Nov 17, 2017

At a concentration of approximately #0.16M#, the aqueous solution of sodium chloride would not interfere significantly with blood pressure. Clearly there are many other factors at play, for the purpose of this question, this suffices.

Explanation:

#Pi = iMRT#

#i_(NaCl) = 1.9#

#7.8b ar * (atm)/(1.013b ar) approx 7.7atm#

#7.7atm = 1.9 * M * (0.08206L*atm)/(mol*K) * 310K#
#therefore M approx 0.16M#

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