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Calculate the freezing point of a solution of 30.0 g methyl salicylate, C7H6O2, dissolved in 800....

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Chemistry

Calculate the freezing point of a solution of 30.0 g methylsalicylate, C7H6O2, dissolved in 800. g of benzene, C6H6. Kf forbenzene is 5.10

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3.6 Ratings (506 Votes)

Moles of methyl salicylate=30.0/122=0.246mol

Molality of solution=moles of solute/mass of solvent in kg

                                =0.246/0.800=0.307 m

Depression in freezing point, dTf=kf*molality

                                                =5.10*0.307=1.568?

Freezing point of benzene=5.50-1.57

                                                =3.93 ?

  
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