1.

The mole fraction of C_(2)H_(5)OH (Molar mass = 46 ) in 5 molal aqueous ethyl elchol solution is

Answer»

0.0826
0.826
5
5/55.55

Solution :5 molal aqueous ethyl ALCOHOL sol. Means 5 moles of ethyl alcohol in 1000 g of water =1000/18 moles = 55.56 moles
`x_(2)=5/(5+55.56)=5/(60.56)=0.082`


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