The volume of water that must be added to 350 ml of a 15% chloride solution bar i (density 1.144 g / ml)

The volume of water that must be added to 350 ml of a 15% chloride solution bar i (density 1.144 g / ml) to prepare a 12% solution is …

1) Find the mass of the barium chloride solution. To do this, multiply the volume of the solution by its density: 350 * 1.144 = 400.4 g.
2) Find the mass of the solute barium chloride. To do this, multiply the mass fraction of the solution by the mass of the solution and divide by one hundred percent: 400 * 15/100 = 60g.
3) Find the mass of the solution in a 12% solution. To do this, we multiply the mass of the solute by one hundred percent and divide by the mass fraction of the substance: 60 * 100/12 = 500g.
4) Find the mass of water to be added: 500 – 400 = 100g.
since the density of water is equal to one, then the volume of water is equal to its mass and is equal to 100 ml – the answer.