JEE Main 2020 — Solutions Question with Solution
From: JEE Main 2020 (Online) 3rd September Evening Slot
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 ______ × 10–2 (to the nearest integer).
Enter your answer
Show full solutionCorrect answer: 177
Correct answer
177
Step-by-step explanation
Let molar mass of protein A = x g/mol
Let molar mass of protein B = y g/mol
A = osmotic pressure of protein A =
B = osmotic pressure of protein B =
Given A = B
=
= = 1.77
= 177 10-2
Let molar mass of protein B = y g/mol
A = osmotic pressure of protein A =
B = osmotic pressure of protein B =
Given A = B
=
= = 1.77
= 177 10-2
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