Calculate the pH of a solution that is 0.0330 M inа. Naz C2O4 (Ка2 — 5.42 х 1о-5).pH =b. Naz SO3 (Ka2 = 6.6 × 10-8).pH =c. C2 H4 (NH3+ Cl-)2 (Kal= 1.42 x 10-").pH =

In all cases formula for weak acid to calculate pH is to be used. a. pH = 0.5pKa-0.5logC =…

Answered: Calculate the pH of a solution that is…

Chemistry & Chemical Reactivity

10th Edition

ISBN:9781337399074

Author:John C. Kotz, Paul M. Treichel, John Townsend, David Treichel

Publisher:John C. Kotz, Paul M. Treichel, John Townsend, David Treichel

Chapter4: Stoichiometry: Quantitative Information About Chemical Reactions

Section: Chapter Questions

Problem 60PS

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12.62 Write the formula of the conjugate acid of each of the following bases, (a) OH-, (b) NHj, (c) CHjNHt, (d) HPO/-, (e) CO.,2’
Assuming that the conductivity of an acid solution is proportional to the concentration of H3O+, sketch plots of conductivity versus concentration for HCl and HF over the 0- to 0.020 M concentration range.
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?
Explain why a sample of pure water at 40 °C is neutral even though [H3O+] = 1.7 × 10−7 M. Kw is 2.9 × 10−14 at 40 °C.
Morphine is a weak base. A 0.150 MM solution of morphine has a pHpH of 10.5.What is KbKb for morphine?
Methylamine, CH3NH2, has a Kb of 4.4 x 10-4. What is the pH of a 0.45 M solution of methylamine? Your answer should be to two places past the decimal.
Find the pH of a 0.0015 M morphine solution (weak base), Kb = 1.6 x 10−6.
Determine the pH and the type of solution of a 0.227 g/L C5H5N solution at 25°C. The Kb of C5H5N is 1.7 × 10-9.
Consider an aqueous solution that is 0.050 M in H2Se (Ka = 1.29 x 10-4) and 0.075 M in NaHSe. Out of the answer choices below, which is the only pH that could possibly be correct? (NOTE: The correct answer may or may not be the actual pH of the solution.) Group of answer choices 1.29 2.56 3.88 4.30
6- According to the definition of an acid and the definition of a base, will the pH increase, decrease, or remain the same when NaCl is added to pure water? Explain. 7- What is a hydrogen bond? Explain how a hydrogen bond forms. 8- What feature of a soap molecule gives it cleaning ability? 9- What ion is responsible for a) acidic properties and b) basic properties? 10- Explain why a pH of 7 indicates a neutral solution -why not some other number?
Determine the pH of each of the following solutions.(a) 0.112 M acetic acid (weak acid with Ka = 1.8e-05).(b) 0.855 M hydrazoic acid (weak acid with Ka = 1.9e-05).(c) 0.867 M pyridine (weak base with Kb = 1.7e-09).
Calculate the pH of a solution (to the correct number of significant figures) that is 5.7×10-3 M Ca(OH)2.

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