Question

B Titration Lab AP Chemistry lab Results For your coa X t courseherowcom/tutors problems chemistry/9831707-Lab. Results-For ur-coarse-titration record-the-following-results-v Lab Results For your coarse titration record the following LU 1 For your coarse titration record the folowing results volume of Nao solution in the burette at the start (m) volume of NaOH soluton in the burette at the ond (mU volume of NaOH soluton dispensed (mi) volume of HCI solution in the flash t calculate the molarey of the Hol concentration using your coarse ttration results Experiment 2 Perform a Fine TitrationLab Results 1 For your fine bitration record the folowing results volume of NaOH sokuton in the burette at the start (mU volume of NaoH solution in the burete at the end(mU volume of NaoHookation dispensed

Answer 1

Data analysis

1.Let V₁ be the volume of acid and M₁ be the molarity of acid.

V₂ be the volume of base and M₂ be the molarity of base.

Then  V₁ M₁ = V₂ M₂

Conclusions

1. If we forgot to add phenolphthalein we were not able to determine the end point.

2. Phenolphthelein is pink in basic medium(NaOH) so if we titrate it with acid(HCl) the end point is the disappearence of pink colur. phenolphthalein is colourless in acid.

3. V₁ M₁ = V₂ M₂

Let V₁ be the volume of acetic acid and M₁ be the molarity of acetic acid.

V₂ be the volume of NaOH and M₂ be the molarity of NaOH.

0.125 M x 22.40 ml = 15.00 ml x M₂

M₂ = (0.125 M x 22.40 ml) / 15.00 ml = 0.187 M