George wishes to increase the percent of acid in 50 ml of a 15% acid solution to 25% acid, how much pure acid must be added?

Explanation:

Let be the quantity of pure acid that you must add, and the total quantity of acid in the solution final solution. Then when you add x to the solution the 25% of it will be :

And is also equal to 15% of the solution of 50ml plus .

Equalize these two equations to form a new without y and solve:

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one negative thing it that it can kill water animals. another negative thing is it can cause the destruction of ecosystem. one way water pollution can be reduced is to conserve energy.