Question

How many liters of water should be added to 18 liters of a 14% bleach solution so that the resulting solution contains only 10% bleach? Original (L) Added (L) New (L) Amount of Bleach 2. 52 0 Amount of Solution 18 x 1. 8 liters 7. 2 liters 15. 5 liters 25. 2 liters.

Answer 1

The amount of water that should be mixed with 18 liters of 14% bleach solution to form 10% bleach solution is 7.2 liters.

What amount of water should be mixed with 1 liter of 14% bleach?

The amount of water should be mixed with 1 liter of 14% bleach solution,

we know that the water will have 0% bleach. thus, the amount of water we need to mix with the 14% bleach solution is (2/5) liters.

Therefore, the ratio of water and bleach solution can be written as,

$\rm \dfrac{14\%\ solution}{Water} = \dfrac{5}{2}$

What amount of water should be mixed with 18 liters of 14% bleach?

We know the ratio of water and bleach solution that should be mixed to form a 10% concentration bleach is (5/2), therefore, we will use the same ratio,

$\rm \dfrac{14\%\ solution}{Water} = \dfrac{5}{2}$

$\rm \dfrac{18}{Water} = \dfrac{5}{2}\\\\\rm {Water} = \dfrac{18\times 2}{5}\\\\\rm Water = 7.2\ liters$

Hence, the amount of water that should be mixed with 18 liters of 14% bleach solution to form 10% bleach solution is 7.2 liters.

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