Question

A 29.00 mL sample of an H2SO4 solution of unknown concentration is titrated with a 0.1122 M KOH solution. A volume of 43.22 mL of KOH was required to reach the equivalence point.

What is the concentration of the unknown H2SO4 solution? Express your answer using four significant figures.

Answer 1

Answer: The concentration of the unknown
`H_(2)SO_(4)` solution is 0.167 M.

Step-by-step explanation:

Given:
`V_(1)` = 29.00 mL,
`M_(1)` = ?

`V_(2)` = 43.22 mL,
`M_(2)` = 0.1122 M

Formula used to calculate concentration of the unknown
`H_(2)SO_(4)` solution is as follows.

`M_(1)V_(1) = M_(2)V_(2)`

Substitute the values into above formula as follows.

`M_(1)V_(1) = M_(2)V_(2)\\M_(1) * 29.00 mL = 0.1122 M * 43.22 mL\\M_(1) = 0.167 M`

Thus, we can conclude that concentration of the unknown
`H_(2)SO_(4)` solution is 0.167 M.