We will calculate the amount of acid to use in each titration. Assume that you a

Question

We will calculate the amount of acid to use in each titration. Assume that you are using .0512M NaOH (aq). A good volume of NaOH (aq) to use per titration is 15 mL. From this molarity and volume, the moles of NaOH can be calculated. Since the unknown acid is monoprotic, this also equals the number of moles of acid to use. A typical molar mass for an unknown acid in this experiment is 380 g/mol.

Suppose that 12.6mL of .0512 M NaOH were required to titrate a sample of unknown acid. How many moles of NaOH were used?

The answer is not .000645 mol

Explanation / Answer

Moles of NaOH used = (0.0512)(0.015 - 0.0126) = 1.2288 x 10^-4 moles = 0.000123 moles

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