If 250 cm³ of an aqueous solution containing 0.73 g of a protein A is isotonic with one litre of another aqueous solution containing 1.65 g of a protein B, at 298 K, the ratio of the molecular masses

Question

If 250 cm³ of an aqueous solution containing 0.73 g of a protein A is isotonic with one litre of another aqueous solution containing 1.65 g of a protein B, at 298 K, the ratio of the molecular masses of A and B is  (to the nearest integer).

Canvas Classes · Accepted Answer

Strategy:
 Isotonic solutions are those that have exactly the same osmotic pressure () at the same temperature. By setting the osmotic pressure equations equal, we can derive the ratio of the molar masses of the two proteins.

Step 1: Set up the equality for isotonic solutions
For two solutions to be isotonic at temperature :

Where  is molarity (moles per liter).

Step 2: Calculate molarity () for each protein
- For Protein A:
  - Mass () = 0.73 g
  - Volume () = 250 cm³ = 0.25 L

- For Prot

More questions from Solutions