Question

Calculate the mole fraction of ethanol c2 h5 0h in solution containing 20 grams of ethanol and hundred grams of water

Answer 1

A 95% mass aqueous solution of ethanol is further diluted with water. The mole fraction of ethanol in the diluted solution is 0.25.

Answer 2

Answer:

molecular mass of c2h5oh = 46

number of moles of ethanol = 20/46=0.4347

number of moles of water = 100/18=5.555

mole fraction of ethanol = ne/nw+ne =

0.4347/5.55+0.4347=0.077