Answered

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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.

Sagot :

Answer: The concentration of the unknown [tex]H_{2}SO_{4}[/tex]  solution is 0.167 M.

Explanation:

Given: [tex]V_{1}[/tex] = 29.00 mL,     [tex]M_{1}[/tex] = ?

[tex]V_{2}[/tex] = 43.22 mL,       [tex]M_{2}[/tex] = 0.1122 M

Formula used to calculate concentration of the unknown [tex]H_{2}SO_{4}[/tex] solution is as follows.

[tex]M_{1}V_{1} = M_{2}V_{2}[/tex]

Substitute the values into above formula as follows.

[tex]M_{1}V_{1} = M_{2}V_{2}\\M_{1} \times 29.00 mL = 0.1122 M \times 43.22 mL\\M_{1} = 0.167 M[/tex]

Thus, we can conclude that concentration of the unknown [tex]H_{2}SO_{4}[/tex]  solution is 0.167 M.

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