Question

If 5 liters of a solution are 20% acid, how much of the solution is acid?

0.2 liters
1 liter
2 liters

Answer 1

1 liter of the solution is acid

Explanation:

It is very important to know that the 5 liters represents the 100% of the total solution. When a percentage is asked, you could use the rule of three for finding the portion, it is the 20% of the total.

5L ------> 100%

x ------> 20%

From previous, x equals 20% multiplied by 5L and divided by 100%

`x=((5L)\cdot (20\%))/(100\%)`

After performing the corresponding operations, we get x=1L

Thus, 1 liter of the solution is acid

Answer 2

The amount of acid in the solution is obtained by multiplying the volume by the percent acid composition of the solution.
amount of acid = volume x percent composition
Substituting,
amount of acid = (5 L) x (0.20) = 1 L
Therefore, the answer of 1L.