Question

The osmotic pressure of a solution containing 7.0 g of insulin per liter is 0.0303 atm at 25 °C. What is the molarity of insulin?

Answer 1

$\Pi=iCRT$

Insulin does not dissociate in water

$\implies\>i=1$

$\therefore0.0303=C×0.08210×(273+20)$

$C=0.0012596M$