1.

The average osmotic pressure of benzoic acid is 7.8 bar at 37^(@)C. What is the concerntration of aqueous KCI solution that could be used in blood stream ?

Answer»

0.16 mol `L^(-1)`
0.32 mol`L^(-1)`
0.60 mol`L^(-1)`
0.45 mol`L^(-1)`

SOLUTION :`pi=CRT or C=pi/(RT)
C=((7.7 atm))/((0.0821 L atm K^(-1)mol^(-1))xx310K)`
`0.31 mol L^(-1)`.


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