Question

The molarity of a sodium chloride 2 po
solution by dissolving 4 gram of it,
in 250 ml of water is

Answer 1

Answer:

GMW = Gram Molecular Weight of the solute = 40g. V = Volume of the solution in ml. = 250 ml. So, M of NaOH = 4 × 1000 / 40 × 250 = 0.4 M.

Answer 2

Answer:

2.72g/lit.

Explanation:

Molarity = no. of moles of solute/ volume of solution (in lit.)

              =(wt./ M.Wt.)×(1000/250)

             = 0.68×4

             = 2.72g/lit.