A laboratory technician needs to make a 108-liter batch of a 20% acid solution. How can the laboratory technician combine a batch of an acid solution that is pure acid with another that is 10% to get the desired concentration?
12 liters of pure acid and 96 liters of 10% acid solution
Using mass and component balance:
Let x = liters of pure acid and y = liters of 10% acid
Mass balance: x + y = 108
Component balance: 100%*x + 10%*y = 20%*108 or x + 0.1y = 21.6
Solving for x and y: x = 12 and y = 96
