Answer to Question #75117 in General Chemistry for Lillian Barbour

Question

you wish to make a 0.369m perchloric acid solution of 12.0 M perchloric acid. How much concentrated acid must you add to obtain a total volume of 150ml of the dilute solution?

Answer 1

Solution:
Let x - volume of the concentrated solution (in ml), then:
12.0 ∙ x = 0.369 ∙ 150
Solving: x = (0.369 ∙ 150) / 12.0 = 4.61 ml

Answer:
4.61 ml