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Calculate the mole fration of ethylene …

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Calculate the mole fration of ethylene glycol (C2H6O2) in a solution containing 20 percent of (C2H6O2) by mass???

Posted by Shweat Panday 4 years, 11 months ago

CBSE > Class 12 > Chemistry

1 answers

Rajandra 123 Kumbhkar 456 4 years, 11 months ago

Given Mass of C2H6O2 =20g Mass of water = 80g We know that :- Molar mass of ethylene glycone =12*2+1*6+16*2 =62 Moles of ethylene glycone = mass of solute / molar mass of solute = 20/62 =0.32 Moles of water = mass of solvent / molar mass of solvent =80/18 =4.44 Mole fraction of solute = moles of solute / moles of solute + moles of solvent =0.32/0.32+4.44 =0.32/4.76 =0.06 Mole fraction of solvent =1- mole fraction of solute =1-0.06 =0.94

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