1 x 10- 1 x 10-13 هر دم تیا ط 1 Table B: Acids(HCI) Molarity Solution # [H"] [OH-1" pH pH calculated determined 1 0.1M 1.0 2 0.01M 3 0.001M 0.0001M Show work for one calculation of [H'), (OH), and pH Table C: Bases NaOH Solution # Molarity [OH-] [H]* pH pH calculated determined 0.1M 1 x 10-1 1 x 10-13 13.0 2 0.01M 0.001M 0.0001M Show work for one calculation of [H). (OH), and pH Table D pH of Water + HCI, Water + NaOH pH pure H2O 7.0 Solution pH 1 drop 1 drop 1 drop 1 drop 1drop 20 mL H2O + HCI HO 6.18 4.42 3.24 3.५१ 3.34 H2O + NaOH 5.28 5.32 5.44 5.13 7.22 How many drops of HCI were needed to lower the pH to 1-2? How many drops of NaOH to raise the pH to 12-13? ANA Table E Buffers pH of Buffer 4.74 Solution pH 10 drops 10 drops 10 drops 10 drops 10 drops Buffer + HCI 4.8 4.8 4.82 4.82 4.83 Buffer + NaOH 4.84 4.85 4.85 4.85 How many drops of HCl were needed to cause a pH change in the buffer of +/- 2.0 ? How many drops of HCl were needed to cause a pH change in the buffer of +/- 2.0 ? 4.84 Discussion (3 points) Please write 1-2 paragraphs summarizing what you learned in this lab. You should explain how you collected data and discuss the significance of your results. You should explain and interpret your results. Include a discussion of any errors that were made and any results you found to be surprising or interesting. If the end point of the titration was dark red & not pale pink what would be the error in the molarity calculation. Please include suggestions for improving the lab if needed. Correct grammar, spelling and word usage is used.
In Lab 13, you will learn about the pH scale and make a buffer solution. 011 LOK100 pH pOH Sanguion 30 15 -1 10 2014 IMHO 101 0 14 10-11 1 13 2 12 10- 10-18 3 31 IMCHCO, Megal somethad we ge cotte ww 194 10 S 10- 10 19 10. 7 7 ned 10- 16 B 6 blood Dan w baking soda 10- 5 10-0 10 104 10 10 of Magnesia 11 12 household tech 10- 10- 13 10-14 14 1M NON bar 301 10 10-15 15 https://openstax.org/books/chemistry-2e ... ph-and-poh For the Lab 13 pH Report Pre Lab (3 points) Results and Calculations (4 points) Table A: pH of Household Chemicals Name of Chemical pH value 1 2 2 8 5 3 4 5 Vinegar Baking soda Buffered Aspirin Juice Tea Coffee Ammonia Shampoo soda water 5 5 6 Is it an acid or a base? acid base acid acid acid acid base acid acid Neutral NONEN 7 8 9 10 3 7
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