Question

What amount of a 50% acid solution must be mixed with a 20% solution to produce 300mL of a 40% solution? mL

Answer 1

Step-by-step explanation:

- The concentration of a solution can be calculated using the formula: concentration = (amount of solute / amount of solution) x 100%

- To solve this problem, we need to use the formula for mixing two solutions together: (concentration of solution 1 x volume of solution 1) + (concentration of solution 2 x volume of solution 2) = (concentration of final solution x total volume of final solution)

- We can rearrange this formula to solve for the unknown volume of one of the solutions: volume of solution 2 = ((concentration of final solution x total volume of final solution) - (concentration of solution 1 x volume of solution 1)) / concentration of solution 2

- Using this formula, we can calculate the volume of the 20% solution needed to mix with the 50% solution to create 300mL of 40% solution.