A quantity of 10 g of solute 'A' and 20 g of solute 'B' is dissolved in 500 ml water. The solution is isotonic with the solution obtained by dissolving 6.67 g of 'A' and 30 g of 'B' in 500 ml water at

Question

A quantity of 10 g of solute 'A' and 20 g of solute 'B' is dissolved in 500 ml water. The solution is isotonic with the solution obtained by dissolving 6.67 g of 'A' and 30 g of 'B' in 500 ml water at the same temperature. The ratio of molar masses, $M_A:M_B$, is

Prashant Kotian · Accepted Answer

Correct answer: C. Since both solutions have the same volume (500 ml) and are isotonic, their total moles of solute must be equal. . Rearranging gives . Therefore, correct answer is C.

💡 Solution & Explanation

Practice 22,000+ questions like this