You can put this solution on YOUR website!
Suppose that a chemist is mixing two acid solutions, one of 20% concentration and the other 30% concentration. Which one of the following concentrations could not be obtained?
A. 22% B. 24% C. 28% D. 32%
This is just a thought problem. If you think about it, you will come to the conclusion that when you mix two acid concentrations, the resulting percent has to be between the two solution's percent.
Note that A,B,C are between 20% and 30%, D which is 32%, on the other hand is not.
You cannot mix a solution that is less than 30 to get more than 30, can you?
Does this clear this up for you?