Question

Mole fraction of A in H2O is 0.2. The molarity of A in H2O is:

Answer 1

Explanation:

In 1 mol solution A is 0.2 mol and water is 0.8 mol

Weight of water is 0.8 x18(g)

Volume = 0.8×18×1/1000 L (density =1)

Molarity = 0.2/volume