Question

The boiling point of diethyl ether, CH,CH,OCH,CHg, is 34.500 °C at 1 atmosphere. K (diethyl ether) - 2.02 °C/m In a laboratory experiment, students synthesized a new compound and found that when 10.45 grams of the compound were dissolved in 273.2 grams diethyl ether, the solution began to boil at 34.718 °C. The compound was also found to be nonvolatile and a non-clectrolyte. What is the molecular weight they determined for this compound? g/mol Submit Answer Retry Entire Group 9 more group attempts remaining

Answer 1

Boiling point of diethyl ether 2 34.500°C. " e of solution 3.718°c . Elevation of boiling point, Aty - 134.718 - 34.500) - 0.318°c. kya 2.02 °clm. Weight of solute , W a 10. 45g. e a diethyl ether w, a 273.2.g. ket, M₂ be the molecular weight of schulte solute alt am W, x1000 in molal concentration of solute fm. a W, X M₂ 10.45 X1000 - moal 273.2 X M₂ How Atoa kp Cm. r) 0.218 2.02 x 10.45X1000 273.2x M₂ 29 M2 8.02 x 10.45 X 1000 243.2 x 0.218 • 354.43 Molecular weight of solute = 354.43 g/mol.