How much water should be added to 15 g of salt to obtain 15 percent pf

1.	How much water should be added to 15 g of salt to obtain 15 percent pf salt solution?
Answer» The mass by mass percentage of a solution is GIVEN by the FOLLOWING relation:- where mass of solution = mass of SOLUTE + mass of solution Here, mass of the solute (i.e. SALT) = 15 g and the required CONCENTRATION of the solution is 15 %. Let the mass of water be a grams. So, 15 = [15 / (15 + a)] X 100 Solving for a, we get a = (100 - 15)g = 85 g

How much water should be added to 15 g of salt to obtain 15 percent pf salt solution?

Answer»

The mass by mass percentage of a solution is GIVEN by the FOLLOWING relation:-

where mass of solution = mass of SOLUTE + mass of solution

Here, mass of the solute (i.e. SALT) = 15 g and the required CONCENTRATION of the solution is 15 %.

Let the mass of water be a grams.

So,

15 = [15 / (15 + a)] X 100

Solving for a, we get

a = (100 - 15)g = 85 g