Question

how much water should be added to 12 ml of alcohol to obtain 12 % alcohol solution .​

Answer 1

Answer:

Let the volume of water to be mixed be x ml

Total volume of the mixture = (x+12) ml

If this is to be 12% alcohol solution, that means that the *mixture* contains

12% of alcohol by volume.

We know that the mixture has 12 ml of alcohol.

So, we get the equation - 12/(x+12) = 12% or 12/100

12%2F%28x%2B12%29+=+12%2F100

Simplifying

1%2F%28x%2B12%29+=+1%2F100

Cross multiplying

x+%2B+12+=+100

x = 88 ml

Need to add 88 ml of water to make it a 12% alcohol solution.

:)

Answer 2

Answer:

88 ml

Explanation:

12% alcohol volume by volume ratio u want.

so if u add 88 ml water, alcohol would be 12 ml out of 100 ml hence u will get desired alcohol solution