Question

How much potassium chloride 20% should you dilute to prepare 480 ml of potassium chloride 2.5%?

Answer 1

Answer: -

60 mL of potassium chloride 20% should be diluted to prepare 480 ml of potassium chloride 2.5%

Explanation: -

Volume of potassium chloride solution = 480 mL

Percentage of potassium chloride = 2.5%

Amount of Potassium chloride =
`(2.5)/(100)` x 480 mL

= 12 mL

Let the required amount be R.

20 % of R = 12 mL.

`(20)/(100)` x R = 12mL

R = 60 mL.

Thus, 60 mL of potassium chloride 20% should be diluted to prepare 480 ml of potassium chloride 2.5%