List of top Chemistry Questions on Molality and Molarity asked in AP EAPCET

A solid solute is dissolved in water. The mole fraction of solute is 0.02. What is the molality of the solution?

248 g of ethylene glycol (\( C_2H_6O_2 \)) is added to 200 g of water to prepare antifreeze. What is the molality of the resultant solution?

3.1 g of a compound, “X” (molar mass = 62 g mol\(^{-1}\)) is dissolved in 19.5 g of another compound, Y (molar mass = 78 g mol\(^{-1}\)). The ratio of mole fractions of X and Y in the solution is:

The molality and molarity of a solution of glucose in water which is labeled as \(10\%\) (w/w) are respectively \((\text{density of solution}=1.2\,\text{g mL}^{-1})\):

\(1.8\,\text{g}\) of glucose \((\text{molar mass }=180\,\text{g mol}^{-1})\) is dissolved in \(0.1\,\text{kg}\) of water. The freezing point of the solution in \(^\circ\text{C}\) is \((K_f \text{ of water}=1.86\,\text{K kg mol}^{-1})\):

If \(50\%\) of \(1\ M\ Na_2SO_4\) is dissociated in aqueous solution of density \(1.2\ g\ mL^{-1}\), what is the molality of \(Na^+\) ions in the solution?