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How can you account for the great pH difference between the juice and eyewash (boric acid solution)?

Chemistry: The Molecular Science

5th Edition

ISBN:9781285199047

Author:John W. Moore, Conrad L. Stanitski

Publisher:John W. Moore, Conrad L. Stanitski

Chapter14: Acids And Bases

Section: Chapter Questions

Problem 89QRT

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Concept explainers

Acid Base Titration

An acid-base titration is the method of quantitative analysis for determining the concentration of an acid and base by exactly neutralizing it with a standard solution of base or acid having known concentration.

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Compare the percent dissociation of the acid in Exercise 21a with the percent dissociation of the acid in Exercise 21d. Explain the large difference in percent dissociation of the acid.
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Which of the solutions in Exercise 21 shows the least change in pH upon the addition of acid or base? Explain.
A quantity of 0.15 M hydrochloric acid is added to a solution containing 0.10 mol of sodium acetate. Some of the sodium acetate is converted to acetic acid, resulting in a final volume of 650 mL of solution. The pH of the final solution is 4.56. a What is the molar concentration of the acetic acid? b How many milliliters of hydrochloric acid were added to the original solution? c What was the original concentration of the sodium acetate?
12 13 14 15 16 17 18 19 20 21 An analytical chemist weighs out 0.118 g of an unknown triprotic acid into a 250 mL volumetric flask and dilutes to the mark with distilled water. She then titrates this solution with 0.1100M NaOH solution. When the titration reaches the equivalence point, the chemist finds she has added 32.8 mL of NaOH solution. Calculate the molar mass of the unknown acid. Be sure your answer has the correct number of significant digits. mol Submit Assignment Continue Toms of Use Pracy Accessibility 2021 McGraw-H Education. All Rights Reserved 99- Type here to search hp
I don't know if it is possible, but I have to make a solution of acetic acid with a pH of 4 and a volume of 250 mL. I have 500 mL of acetic acid 10% and I need to add a certain amount of this acetic acid to the water to have this pH. I was wondering what are the quantities of water and acetic acid I need to "mix" together. Thank you !
16. Calcium hydroxide can be used to neutralize the water in lakes that have been "killed" by acid rain. Ecologists hope that the original plants and animals will become re-established. . If the concentration of sulfuric acid in an acid lake is 1.2 x 10³ mol/L, and 1000 kg of calcium hydroxide is added to the lake, what is the volume of water in the lake that can be neutralized? What is the original pH of the lake? What might be disadvantage(s) of using this method to neutralize the lake.
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