If 264 g of a tetraethylbenzene is dissolved in 761 g ofcyclohexane solvent, cal

Question

If 264 g of a tetraethylbenzene is dissolved in 761 g ofcyclohexane solvent, calculate the boiling temperature of thesolution. Consider if the solute is an electrolyte.


Molar Mass (g/mol) (C2H5)4C6H2 190.33 C6H12 84.156 Solvent Melting Point (oC) 6.55 Boiling Point (oC) 80.74 Kf (oC/m) 20.00 Kb (oC/m) If 264 g of a tetraethylbenzene is dissolved in 761 g ofcyclohexane solvent, calculate the boiling temperature of thesolution. Consider if the solute is an electrolyte.


Molar Mass (g/mol) (C2H5)4C6H2 190.33 C6H12 84.156 Solvent Melting Point (oC) 6.55 Boiling Point (oC) 80.74 Kf (oC/m) 20.00 Kb (oC/m)

Explanation / Answer

Molality of tetraethyl benzene = mass of tetraethylbenzene * 1000 / ( Molar mass * Mass of solvent)                                               =264 g * 1000 / (190.33 g/mol * 761 g)                                              = 1.82 m Tb = Kb * molality         Substitute the value of Kb and molality to get the elevationin boiling point Tb Add this value to boiling point of solvent to get boilingpoint of solution.

Related Questions

Navigate

• Browse (All)
• Browse I
• Subjects

---

---

Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.