What would be the van't Hoff factor for a solution prepared by dissolving $$3.42 \mathrm{~g}$$ of $$\mathrm{CaCl}_2$$ in $$2500 \mathrm{~ml}$$ of water having an Osmotic pressure equal to $$0.75 \mathrm{~atm}$$. at $$27^{\circ} \mathrm{C}$$ ? Molar mass of $$\mathrm{CaCl}_2=111 \mathrm{~amu}$$.

What is the mole fraction of solute in a $$5 \mathrm{~m}$$ aqueous solution?

Choose the incorrect statement:

$$\mathrm{X}$$ is an electrolyte with a concentration of $$0.04 \mathrm{M}$$ whose formula is of the type $$\mathrm{X}_2 \mathrm{~A}$$. $$\mathrm{Y}$$ is a non-electrolyte solution with a concentration of $$0.2 \mathrm{M}$$ and has an osmotic pressure equal to $$\mathrm{P}_2$$ at room temperature. What is the relationship between the Osmotic pressure $$\pi$$ of $$\mathrm{X}$$ and $$\mathrm{P}_2$$ ?