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What is the concentration of 25.00 mL of an unknown monoprotic acid if 18.24 mL of...

What is the concentration of 25.00 mL of an unknown monoprotic acid if 18.24 mL of standardized 0.125 M sodium hydroxide solution was required to reach the equivalence point of the titration?
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Answer #1

Monoprotic acid = HA

Sodium hydroxide = NaOH

HA + NaOH -----> NaA + H2O

M1V1 = M2V2

M1 = ?, V1 = 25.00 mL

M2 = 0.125M, V2 = 18.24 mL

M1*25.00 = 0.125*18.24

M1 = (0.125*18.24)/25.00

     = 0.0912 M

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