1.

the average osmotic pressure of human blood is 7.8 bar at 37^(@)C. What is the concentration of an aqueous NaCl solution that could be used in the blood stream?

Answer»

`"0.15 mol/L"`
`"0.30 mol/L"`
`"0.60 mol'L"`
`"0.45 mol/L"`

Solution :NACL sol. USED should be isotonic with blood STREAM. For NaCl, `i=2. PI=i` CRT
`C=(pi)/(iRT)=("7.8 bar")/(2xx"0.83 bar L K"^(-1)"mol"^(-1)xx310K)`
`="0.15 mol L"^(-1)`.


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