How many liters of pure acid are there in 8 liters of a 20% solution?

Options

A. a. 1.4
B. b. 1.5
C. c. 1.6
D. d. 2.4

Answer

To find out how many liters of pure acid are in 8 liters of a 20% solution, we can follow these steps:

### Step-by-Step Solution:

1. **Understand the Problem**: We have a solution that is 20% acid, and the total volume of the solution is 8 liters. We need to find out how much of that is pure acid.

2. **Calculate the Amount of Pure Acid**:
- To find the amount of pure acid, we can use the formula:
\[ \text{Amount of pure acid} = \text{Percentage of acid} \times \text{Total volume of solution} \]
- Here, the percentage of acid is 20%, which can be expressed as a fraction:
\[ 20\% = \frac{20}{100} = 0.20 \]
- Now, substituting the values into the formula:
\[ \text{Amount of pure acid} = 0.20 \times 8 \text{ liters} \]

3. **Perform the Calculation**:
- Calculate:
\[ 0.20 \times 8 = 1.6 \text{ liters} \]

4. **Conclusion**: Therefore, the amount of pure acid in the 8 liters of a 20% solution is **1.6 liters**.

### Final Answer:
The amount of pure acid in 8 liters of a 20% solution is **1.6 liters**.

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