Question

How much water should be added to 120 oz. of a 50% acid solution to dilute it to a 30% acid solution?

A. 40 oz.
B. 60 oz.
C. 80 oz.
D. 100 oz.

Answer 1

To dilute a 50% acid solution to a 30% acid solution, we can calculate the amount of water to be added using a simple equation.

Step-by-step explanation:

To dilute the 50% acid solution to a 30% acid solution, we need to calculate the amount of water to be added. Let's assume that x ounces of water need to be added.

Step 1: Calculate the amount of acid present in the original solution. In 120 oz. of a 50% acid solution, there would be 0.5 * 120 = 60 oz. of acid.

Step 2: Calculate the amount of acid present in the final solution. In the diluted solution, there would be 0.3 * (120 + x) oz of acid.

Step 3: Equate the amount of acid in the original solution and the final solution. 60 = 0.3 * (120 + x). Solve for x to get the answer.