Problema Solution
pure acid is to be added to a 10% acid solution to obtain 90L of 99% solution. What amounts of each should be used
Answer provided by our tutors
Let
x = L of pure acid (100% acid)
y = L of 10% acid solution
x + y = 90
1.00x + 0.10y = 0.99*90
........
click here to see the system of equations solved for x and y
........
x = 89 L
y = 1 L
89 L of pure acid and 1 L of 10% acid solution should be used.