Why is the answer a & d? According to Le Chatelier's principle, if you add more A to the following solution at pH 5.00, whatwill happen. ASsume HA is a weak acid. Watch equilibrium video posted on module 2 learningobjectives page if you are not familiar with Le Chatelier's principle.HA(aq) + H2O(1)H3O* + A(ag)(aq)a. pH will increase but not muchb. pH will decrease but not muchC. amount of A- will decrease (than in the initial solution)d. amount of HA will increase (than in the initial solution)e. pH will still be 5.00

The equilibrium reaction given is, => HA (aq) + H2O (l) ↔ H3O+ (aq) + A- (aq) Given: More A- is…

Answered: According to Le Chatelier's principle,…

Chemistry: Principles and Reactions

8th Edition

ISBN:9781305079373

Author:William L. Masterton, Cecile N. Hurley

Publisher:William L. Masterton, Cecile N. Hurley

Chapter13: Acids And Bases

Section: Chapter Questions

Problem 27QAP: Find [OH+], [OH-] and the pH of the following solutions. (a) 30.0 mL of a 0.216 M solution of HCI...

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Similar questions

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At 25 C, a 0.10% aqueous solution of adipic acid, C5H9O2COOH, has a pH of 3.2. A saturated solution of the acid, which contains 1.44 g acid per 100. mL of solution, has a pH = 2.7. Calculate the percent dissociation of adipic acid in each solution.
Find [OH+], [OH-] and the pH of the following solutions. (a) 30.0 mL of a 0.216 M solution of HCI diluted with enough water to make 125 mL of solution. (b) A solution made by dissolving 275 mL of HBr gas at 25C and 1.00 atm in enough water to make 475 mL of solution. Assume that all the HBr dissolves in water.
What is a salt? List some anions that behave as weak bases in water. List some anions that have no basic properties in water. List some cations that behave as weak acids in water. List some cations that have no acidic properties in water. Using these lists, give some formulas for salts that have only weak base properties in water. What strategy would you use to solve for the pH of these basic salt solutions? Identify some salts that have only weak acid properties in water. What strategy would you use to solve for the pH of these acidic salt solutions? Identify some salts that have no acidic or basic properties in water (produce neutral solutions). When a salt contains both a weak acid ion and a weak base ion, how do you predict whether the solution pH is acidic, basic, or neutral?
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Two students were asked to determine the Kb of an unknown base. They were given a bottle with a solution in it. The bottle was labeled aqueous solution of a monoprotic strong acid. They were also given a pH meter, a buret, and an appropriate indicator. They reported the following data: volume of acid required for neutralization = 21.0 mL pH after 7.00 mL of strong acid added = 8.95 Use the students' data to determme the Kb of the unknown base.
What is meant by “pH”? True or false: A strong acid always has a lower pH than a weak acid does. Explain.
Two strategies are also followed when solving for the pH of a base in water. What is the strategy for calculating the pH of a strong base in water? List the strong bases mentioned in the text that should be committed to memory. Why is calculating the pH of Ca(OH)2 solutions a little more difficult than calculating the pH of NaOH solutions? Most bases are weak bases. The presence of what element most commonly results in basic properties for an organic compound? What is present on this element in compounds that allows it to accept a proton? Table 13-3 and Appendix 5 of the text list Kb values for some weak bases. What strategy is used to solve for the pH of a weak base in water? What assumptions are made when solving for the pH of weak base solutions? If the 5% rule fails, how do you calculate the pH of a weak base in water?
Nicotine, C10H14N2, has two basic nitrogen atoms (Figure 16.12), and both can react with water. Nic(aq)+H2O(l)NicH+(aq)+OH(aq)NicH+(aq)+H2O(l)NicH22+(aq)+OH(aq) Kb1 is 7.0 107 and Kb2 is 1.1 1010. Calculate the approximate pH of a 0.020 M solution.

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