The hypochlorite disinfection solution is prepared using how much chlorine bleach per gallon of water?

The hypochlorite disinfection solution is prepared using how much chlorine bleach per gallon of water?

• A. 1 tablespoon
• B. 2 tablespoons
• C. 4 tablespoons
• D. 1 cup

Answer: (B)

Diluting hypochlorite to a disinfecting strength relies on using an amount of bleach that yields about a half-percent active chlorine in the solution. Using two tablespoons of household bleach per gallon of water achieves that balance when the bleach is typical household strength (about 5–6% sodium hypochlorite). This concentration is strong enough to disinfect many germs but not so strong that it causes excessive corrosion or irritation. A smaller amount, like one tablespoon, would be weaker and may not reliably disinfect, while a larger amount, such as a cup, would be more concentrated than needed for routine disinfection.

Diluting hypochlorite to a disinfecting strength relies on using an amount of bleach that yields about a half-percent active chlorine in the solution. Using two tablespoons of household bleach per gallon of water achieves that balance when the bleach is typical household strength (about 5–6% sodium hypochlorite). This concentration is strong enough to disinfect many germs but not so strong that it causes excessive corrosion or irritation. A smaller amount, like one tablespoon, would be weaker and may not reliably disinfect, while a larger amount, such as a cup, would be more concentrated than needed for routine disinfection.