Problema Solution
a pharmacist has 3500ml 30%sodium hydroxide solution. He needs to prepare 1% sodium hydroxide solution. How many ml of water does he need to add to get 1% sodium hydroxide solution?
Answer provided by our tutors
Let 'x' represents the ml of water needed for the solution.
0.30*3500 + 0*x = 0.01*(3500 + x)
........
click here to see the equation solved for x
........
x = 101,500 ml
The pharmacist needs 101,500 ml of water.