Question

calculate the mole fraction of ethanol if 46g ethanol present in 36g of water

Answer 1

Ethanol = C2H5OH

molecular mass = 24 + 5 + 16 +5 = 50

 

moles of Ethanol = 23/50

 

moles of water = 36/18 = 2 moles

 

now mole fraction of ethanol = (23/50) / (23/50 + 2)

 = 23/123