It takes 24.56 ml of a sodium hydroxide solution to precisely neutralize 2.023 g of potassium hydrogen phthalate (f. w. = 204.22g/mol). what is the concentration of the sodium hydroxide solution?

0.4033 M is the concentration of the sodium hydroxide solution.

Explanation:

Mass of potassium hydrogen phthalate = 2.023 g

Molar mass of potassium hydrogen phthalate = 204.22 g/mol

Moles of potassium hydrogen phthalate :

=

According to reaction, 1 mole of potassium hydrogen phthalate reacts with 1mole of NaOH. Then 0.009906 moles of potassium hydrogen phthalate  will recat with:

of NaOH

Moles of NaOH = 0.009906 mol

Volume of NaOH solution = 24.56 mL = 0.02456 L

0.4033 M is the concentration of the sodium hydroxide solution.

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