Formic acid is in the venom of some ant species. What is the pH of a 0.5 M solution of formic acid (Ka = 1.78 \times10-4M)? Group of answer choices 2.03 2.22 1.84 3.22 3.67

We assumed that 0.5 - x is nearly equal to 0.5 because value of x is very very less.

Answered: Formic acid is in the venom of some ant…

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 96QRT

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Calculate the pH of each of the following solutions. (a) 10.0 mL of 0.300 M hydrofluoric acid plus 30.0 mL of 0.100 M sodium hydroxide (b) 100.0 mL of 0.250 M ammonia plus 50.0 mL of 0.100 M hydrochloric acid (c) 25.0 mL of 0.200 M sulfuric acid plus 50.0 mL of 0.400 M sodium hydroxide
Indicate whether each of the solutions in Problem 10-65 is acidic, basic, or neutral. a. 3.5 103 M b. 4.7 106 M c. 1.1 108 M d. 8.7 1010 M
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?
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The pH of a 0.10-M solution of caffeine is 11.16. Determine Kb for caffeine from these data: C8H10N4O2(aq)+H2O(l)C8H10N4O2H+(aq)+OH(aq)
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Formic acid is in the venom of some ant species. What is the pH of a 0.5 M solution of formic acid (Ka = 1.78 \times 10-4M)? Group of answer choices 2.03 2.22 1.84 3.22 3.67