What quantity of water should be added to reduce 20 liters of 80% acidic liquid to 20% acidic liquid...

What quantity of water should be added to reduce 20 liters of 80% acidic liquid to 20% acidic liquid?

Quiz

Answer/Solution

60liters

Steps/Work

Acid in 20 liters = 80% of 20 = 16 liters
Suppose x liters of water be added.
Then 16 liters of acid in 20+x liters of diluted solution
20% of 20+x = 16
20+x = 80
x = 60liters
Answer is C