Question

What quantity of water should be added to reduce 6 litres of 50% acidic to 20% acidic water?​

Answer 1

Step-by-step explanation:

6l of water should be added

Answer 2

Answer:

9 litres.

Step-by-step explanation:

Its a simple math, 6 litres of 50% acidic water means 3 litre of pure water and 3 L acid.

That means ratio of quantity of acid to quantity of water is 1:1.

Now we want x litres of 20% acidic water. If u calculate it in the same way as above, we want the ratio of quantity of acid to quantity of water to be 1:4.

We have to add water in our solution in order to reduce acidic nature, so quantity of acid is constant i. e, 3 L.

But this time our ratio is 1:4 so quantity of water required is 12 L.

We already have 3 L of water so we shall have to add remaining 9 L to it, to get mentioned result.