Question

Part A -

Bovine Insulin

An aqueous solution containing 1.0 g/liter of bovine insulin (a protein not ionized) has an osmotic pressure of 3.1 mm Hg at 25

Answer 1

We know that osmotic pressure ,

Where

= osmotic pressure = 3.1 mmHg

                               = 3.1 / 760 atm                       Since 1 atm = 760 mm Hg

                              = 4.08x10 ^-3 atm

R = gas constant = 0.0821 Latm/mol-K

T = temperature in kelvin = 25 ^oC = 25 + 273 = 298 K

C = concentration =

PLug the values we get

                  

           

         

So molar mass of bovine insulin is 6.0x10 ³ g/mol