To prepare a solution of 100mg per liter available chlorine, how much of 5.25% bleach with one gallon of water should be used?

To determine the appropriate amount of 5.25% bleach to use for preparing a solution of 100 mg per liter of available chlorine, it's crucial to understand the concentration of the bleach and how it translates to the desired outcome.

5.25% bleach means there are 5.25 grams of sodium hypochlorite in every 100 mL of solution. Since 1 liter equals 1000 mL, the concentration translates to 52.5 grams of sodium hypochlorite per liter of bleach.

To achieve 100 mg of available chlorine per liter of water, you need to figure out how many grams that is:

• 100 mg equals 0.1 grams of chlorine.

Now, we need to calculate how many mL of the bleach solution are required to obtain 0.1 grams of sodium hypochlorite.

Using the concentration information, we find:

1. The amount of sodium hypochlorite in 1 mL of the 5.25% bleach is:

[

5.25 \text{ grams} / 100 \text{ mL} = 0.0525 \text{ grams per mL}

]

2. To