1. Mol NaOH = L HCl * Molarity of HCl * Stoichiometry (mol NaOH / mol HCl) Molarity of HCL= 0.116 Amount of NaOH, mL = Final NaOH (ml) – Initial NaOH (mL) : 30.2-12= 18.2 mL = 0.0182 L  L HCL= 0.02 L 2. Mol HC2H3O2 = L NaOH * Molarity of NaOH (from # I) * Stoichiometry (mol HC2H3O2/ mol NaOH) Amount of HC2H3O2, mL = Final HC2H3O2 (mL) – Initial HC2H3O2 (mL) 22.95-0.15= 22.8 mL = 0.0228 L Amount of NaOH, mL = Final NaOH (ml) – Initial NaOH (mL) 23.09-0.01= 23.08 mL = 0.02308 L

Introductory Chemistry: A Foundation
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Author:Steven S. Zumdahl, Donald J. DeCoste
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Chapter15: Solutions
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Problem 34QAP: 34. For each of the following solutions, the number of moles of solute is given, followed by the...
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1. Mol NaOH = L HCl * Molarity of HCl * Stoichiometry (mol NaOH / mol HCl)

  • Molarity of HCL= 0.116
  • Amount of NaOH, mL = Final NaOH (ml) – Initial NaOH (mL) : 30.2-12= 18.2 mL = 0.0182 L 
  • L HCL= 0.02 L

2. Mol HC2H3O2 = L NaOH * Molarity of NaOH (from # I) * Stoichiometry (mol HC2H3O2/ mol NaOH)

  • Amount of HC2H3O2, mL = Final HC2H3O2 (mL) – Initial HC2H3O2 (mL) 22.95-0.15= 22.8 mL = 0.0228 L
  • Amount of NaOH, mL = Final NaOH (ml) – Initial NaOH (mL) 23.09-0.01= 23.08 mL = 0.02308 L 
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