Imagine two solutions with the same concentration and the same boiling point, bu

Question

Imagine two solutions with the same concentration and the same boiling point, but one has benzene as the solvent and the other has carbon tetrachloride as the solvent. Determine that molal concentration, m (or b), and boiling point, Tb.

please show work, Thanks

Question 12 of 18 Map A Sapling Learning Dagine two solutions with the same concentration and the same boiling point, but one has benzene as the solvent and the other has carbon tetrachloride as the solvent. Det ne that molal concentration, m (or b), and boiling point, Tb. boiling K Number Solvent point (C) benzene 80.1 2.53 76.8 5.03 tetrachloride Number O Previous Give Up & View Solution Check Answer Next Ext Hint

Explanation / Answer

Elevation in boiling point = Kb*m

For CCl4, boiling point elevation = 5.03*m, where m1= concentration of CCl4

Boiling point of solution = 76.8+5.03m

For Benzene, boiling point of solution = 80.1+2.53m

Since both the boiling points of solutions are same. 76.8+5.03m= 80.1+2.53m

(5.03-2.53)*m= (80.1-76.8)

Hence m = 1.32 moles/ kg solvent

Boiling point of the solution = 76.8+5.03*1.32=83.43 deg.c

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