Question

A laboratory has one solution of 15% hydrochloric acid (HCL) and one solution of 40% HCL. A mixture requires 50 liters of 35% HCL. How many liters or each must be used?

Answer 1

You have 2 solutions:
A) 15% HCl
B) 40% HCl
50 liters of 35% HCl is required

set up 2 equations
A + B = 50
.15A + .40B = (.35 * 50)

Now solve for A (the 15%) and B (the 40%)

This page has a worked out problem: (See section A)
http://www.1728.org/mixture.htm

Answer 2

Is B 40 and A 10?

Answer 3

Correct !!

Answer 4

Oh! So my answer would be 40 liters of 40% HCI and 10 liters of 10% HCI?

Answer 5

10 liters of the 15% HCl

Answer 6

Oh, right, oops!!

Answer 7

It's okay

Answer 8

Thank you!!

Answer 9

u r welcome
glad to help out :-)