Question

What is the volume, in mL, of a 2.50M `HCl` solution that must be used in order to create a 350 mL 1.15M `HCl` solution?

Answer 1

0.161 L of 2.50M HCl

Explanation:

This is a dilution problem.

This formula must be known/looked up:

`M1 x V1 = M2 x V2`

Given:

M1 = 2.50 M
V1 = ?

M2 = 1.15 M
V2 = 350 mL (must be converted to L as molarity is in mol/L)

Plug in the formula:

2.50 x `V1` = 1.15 M x 0.350 L

`V1` = 0.161 L