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Calculate the mass of lactic acid contained in the sample

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Reference no: EM131697744

Lactic acid, HC3H5O3, is the acid, which forms when milk sours. As its formula indicates, this acid has an acid hydrogen ion. It requires 22.4 mL of NaOH at 0.156 M to neutralize the acid in a sample of 25.0 mL of lactic acid. Calculate the mass of lactic acid contained in the sample.

C3H6O3 + NaOH = H2O + NaC3H5O3

Volume of NaOH =22.4 mL=0.0224L

Number of moles of NaOH =0.156M

Volume of C3H6O3=25.0mL =0. 025L

Number of moles of C3H6O3= 1mol/1mol x 0.156 x 0.0224

=  0.0034944 mole

Reference no: EM131697744

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