1.

200 ml of an aqueous solution of a protein contains 1.26 g of protein. At 300 K, the osmotic pressure of this solution is found to be2.52xx 10^(-3)bar.The molar mass of protein will be (R=0.083 Lbar mol ^(-1) K^(-1))

Answer»

`62.22` KG `mol^(-1)`
`12444 g mol ^(-1)`
`300 g mol ^(-1)`
none of these

Solution :`pi = CRT`
`pi = (W)/(M xxV) xx RT`
` therefore M = (WRT)/(PIV) = (1.26 xx 0.083 xx 300)/(2.52 xx 10 ^(-3) xx 0.2)= 62.22 kg mol ^(-1)`


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