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**Hello!**

1. Homework Statement

1. Homework Statement

Please, take a look at the problem and at my solution. Have I done it correctly and is my logic correct?

How much of a 10 liter 30% acid solution must be replaced with pure acid to obtain 10 liters

of a 50% solution?

## Homework Equations

3. The Attempt at a Solution [/B]

I need to get 10 liters of final solution that contains 5 liters of acid.

Let X be the volume of 30% solution, and Y the volume of pure acid.

Than:

X + Y = 10

0.3 X + Y = 5 I take 0.3X of 30% solution and add Y of acid to get 5 liters of acid.

Y = 2.857

Thank you!