Question

Molarity of 49% (W/V) H2SO4 solution whose density is 1.22 g/ml is

Answer 1

Answer:

Explanation:

As 49% is the weight by volume of the H2SO4 hence we need to find the volume first.

We can find the volume by:-

Density = 1.22g/ml

As density = mass per unit volume.

Then, volume = mass/density

Taking the mass of H2SO4 to be as 100g Then,

volume = 1.22*100 = 122ml = 0.122Litres

Now to find out molarity, we know that molarity is moles per unit volume of the solute in 1000 litre solution of water.

Molar mass of H2SO4 is 98g.

Thus, molarity = 49/(98*0.122)

molarity = 4.09M.