Question

Calculalte the molarity and molity of 20% aqueous ethanol sol by vol assume the sol to be ideal

Answer 1

The molarity and molality of solution is, 3.425 mole/L and 4.269 mole/Kg respectively. 20 % aqueous ethanol solution by volume means that the 20 ml of ethanol is present in the 100 ml of solution. First we have to calculate the mass of solution.