First slide

Theory of dilute solutions

Question

A solution containing 500 g of a protein per litre is isotonic with a solution containing 3.42g sucrose per litre. The molecular mass of protein in 5 x 10^x , hence x is.

Moderate

Solution

For isotonic solution
$\begin{array}{c} π_{Protein} = π_{Sucrose} \\ \frac{500}{x} = \frac{3 .42}{342} \Rightarrow x = 5 \times 10^{4} \end{array}$

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