A0.797 g sample of β‑galactosidase is dissolved in water to make 0.199 l of solution, and the osmotic pressure of the solution at 25 ∘c is found to be 0.853 mbar. calculate the molecular mass of β‑galactosidase.

Molecular mass of β‑galactosidase = 1.16*10^5g

Explanation:

The osmotic pressure (π) is related to the molarity (M) of a solution by the following equation:

i = Von't hoff factor = 1 for non-electrolytes

R = gas constant = 0.0821Latm/mol-K

T = temperature

Based on the above equation, molarity of β‑galactosidase is:

since electrons are negative the answer is neagtaive