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1) At which point along thetitration curve of a weak acid titrated with a strong base does thepH = pK_a

- At the half equivalence volume

- At the equilavence volume

- Before any base is added

- Beyond equilavence volume

2) In a titration of a 100.0mL 1.00M HA weak acid solution with1.00M NaOH, what is the pH of the solution after the addition of131 mL of NaOH?   K_a = 1.80 x 10^-5for HA. (3 significant figures)

**Remember to calculate the equivalence volume and think aboutin which region along the titration curve the volume of base falls,region 1, 2, 3, or 4**

3)In a titration of a 100.0mL1.00M HCl strong acid solution with 1.00M NaOH, what is the pH ofthe solution after the addition of 121 mL of NaOH? (3 significantfigures)

**Remember to calculate the equivalence volume and think aboutin which region along the titration curve the volume of base falls,region 1, 2, 3, or 4**

4) In a titration of a 100.0mL1.00M HA weak acid solution with 1.00M NaOH, what is the pH of thesolution after the addition of 49.5 mL of NaOH?K_a = 1.80 x10^-5 for HA. (3significant figures)

**Remember to calculate the equivalence volume and think aboutin which region along the titration curve the volume of base falls,region 1, 2, 3, or 4**

5) In a titration of a 100.0mL1.00M HCl strong acid solution with 1.00M NaOH, what is the pH ofthe solution after the addition of 30.9 mL of NaOH? (3 significantfigures)

**Remember to calculate the equivalence volume and think aboutin which region along the titration curve the volume of base falls,region 1, 2, 3, or 4**