5.Formic acid is an organic acid, found in the venom of ants and bees. The diagram showsa molecule of formic acid dissociating in water.||HHHHHHa) Determine the dissociation constant of a 0.100 mol L-' formic acid solution that has apH of 2.38.b) Use the dissociation constant calculated in part (a) to identify the strength of thisacid.

The question is based on the concept of chemical equilibrium. we have to calculate acid dissociation…

Answered: 5. Formic acid is an organic acid,…

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 58QAP: Consider citric acid, H3C6H5O7, added to many soft drinks. The equilibrium constants for its...

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Similar questions

. How is the strength of an acid related to the fact that a competition for protons exists in aqueous solution between water molecules and the anion of the acid?
Write the Lewis structures of the reactants and product of each of the following equations, and identify the Lewis acid and the Lewis base in each: (a) CS2+SHHCS3 (b) BF3+FBF4 (c) I+SnI2SnI3 (d) Al(OH)3+OHAl(OH)4 (e) F+SO3SFO3
Consider citric acid, H3C6H5O7, added to many soft drinks. The equilibrium constants for its step-wise ionization areKa1=7.5104 ,Ka2=1.7105, andKa3=4.0107. Write the overall net ionic equation and calculate K for the complete ionization of citric acid.
A 0.11 M solution of weak acid, HA, has a pH of 5.08.a. Write the dissociation reaction of the acid in water.b. Write the acid dissociation constant expression.c. Given the table below, what is the most probable identity of the acid?
Q3- The acid-dissociation constant for chlorous acid, HCIO,, at 25C is 1.0x10. Calcul the concentration of H+ if the initial concentration of acid is 0.100 M. d Q4- How many grams of sodium hydroxide (M.wi=58.5) can be added 0 2.5 liter of a solution mixture of 0.3M ammonia and 0.15M ammonium chloride without changi POH by more than lunit? Ky=1.8x 10°? w
An aqueous solution of hypochlorous acid is used a disinfectant in many sanitizing sprays and swimming pool cleaners. Use the dissociation constant of hypochlorous, HOCl. HOCl ---> H+ + OCl- For 3.0x10-3 M solution of hypochlorous acid, calculate molar concentrations of all three species and the percent dissociation of the acid.
HF is a weak acid, whose conjugate base is F-. Write the reaction that corresponds to Ka and Kb for the respective species. Write the equilibrium expression for each reaction.
The images below represent solutions of two acids, HX and HY. (H2O is omitted for clarity.) Which is the stronger acid? Which is the stronger base? Given the equilibrium reaction: HX+Y−⇌X−+HY If equal volumes of 1.0 M HX, 1.0 M Y-, 1.0 M HY, and 1.0 M X- solutions are mixed together, in which direction will the reaction occur?
Is the self ionization of water endothermic or exothermic? The ionization constant for water (Kw) is 5.0 ✕ 10−15 at 16°C and 7.1 ✕ 10−14 at 55°C. When the temperature of the system is increased, the reaction shifts toward the ---Select--- reactant OR product side, making K ---Select--- larger OR smaller . According to Le Châtelier's principle, the reaction shifts ---Select--- towards or away from the heat term, so the heat term must be on the ---Select--- reactant or product side of the equation. Therefore, the reaction is ---Select--- endothermic or exothermic . †
Acetic acid is a weak acid, meaning it does not fully dissociate in water. Instead, there is an equilibrium between the dissolved but undissociated molecule and the component ions: HOAc (aq) + H2O (l) ⇌ H3O+ (aq) + OAc– (aq)OAc– is an abbreviation for the acetate ion, CH3COO–, and H3O+ is the hydronium ion (lone protons, H+ (aq), do not exist!). (d) When starting with completely un-dissociated acetic acid, is it accurate to assume that [HOAc]0 = [HOAc]eq? Why or why not? (e) A highly concentrated acetic acid solution contains 15.0M acetic acid at equilibrium. What are the equilibrium concentrations of the hydronium and acetate ions in this solution? (f) Creating the concentrated acetic acid solution by dissolving liquid HOAc in water raises the temperature of the water by about 5°C from room temperature. At 50°C, do you expect the solution to contain more or less acetate ion OAc– than what you calculated in (c)? Why?
Calculate [H3PO4], [H₂PO4], [HPO4²-], [PO4³-], [H3O+], [OH-], and [CI-] in a mixture that is initially 0.100 M H3PO4 and 0.010 M HCl.
The value of K for NO2-+H3O+---> HNO2+H2O is?

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