The stinging sensation from red ants comes from formic acid, which dissociates based on the following...
The stinging sensation from red ants comes from formic acid, which dissociates based on the following equilibrium: HCOOH(aq) ⇄ H+(aq) + HCO2-(aq) Ka= 1.8 x 10-4 What is the pH of a 0.50 M solution of formic acid?
4) The venom of stinging ants contains formic acid (Ka = 1.8 x 10-4). Calculate the pH of a 0.25 M solution of formic acid.
The venom of biting ants contains formic acid, HCOOH (Ka = 1.8×10–4 at 25 °C). What is the pH of a 0.105 M solution of formic acid?
(4) 6 pts. A buffer contains 0.500 M of Formic acid (HCHO,) and 0.500 M of sodium formate (NaCHO2). Formic acid is a weak acid that dissociates in water as following: HCHO2 (aq) + H20 (1) =H30+ (aq) + CHO2 (ag) The equilibrium constant: Ks = ([H30+1X[CH02:])/[HCH02] =1.8 x 10-4 Calculate the pH of the buffer solution.
16. Formic acid (HCOOH) is secreted by ants. Calculate [H3O+] for a 1.07E-2 M aqueous solution of formic acid (K = 1.80E-4). Submit Answer Tries 0/99
Calculate the pH of a 0.065 M formic acid (HCOOH) solution. Formic acid is a weak acid with Ka = 1.8 × 10–4 at 25°C. 2.48 is WRONG answer!!!!!! Write your answer to two decimal places. Calculate the pH of a 0.065 M formic acid (HCOOH) solution. Formic acid is a weak acid with 1.8x 10at 25°C. pH 2.48
Question 4 2 pts If 11 drops of a formic acid (HCOOH) solution are titrated with 10 drops of a 0.12 M NaOH solution, what is the percent ionization of the formic acid solution? (Ka for formic acid 1.78 x 104) 4.0% 1.3% 1.9% @ 2.5% Question 5 2 pts What is the pH of an acetic acid solution if 25 drops are titrated with 44 drops of a 0.45 M KOH solution? (K, for acetic acid 1.8 x 105)...
Determine the pH of 0.036 M formic acid (HCO2H), Kg = 1.8 x 10-4? HCO,H (aq)=H+ (aq) + HCO2 (aq) ▶ View Available Hint(s) 0 pH = 0.26 O pH = 12.6 oooo O pH = 1.4 pH = 2.6 Submit
4. (2pts) Consider the following aqueous equilibrium for a formic acid solution: HCO2H (aq) = H+ (aq) + HCO2 (aq) Suppose hydrogen chloride gas is dissolved in the solution. Which statement below regarding the resulting solution is not true? (Ignore any volume changes) A. The pH decreases. B. The H concentration increases. C. The system shifts left to reestablish equilibrium. D. The concentration of HCO2 decreases, E. The value of Ka increases. Page 1 of 2
Name Quiz Nov 14 Show all your work 1) The venom of bring ants contains formic acid, HCOOH (pKa 3.74 at 25C). Determine the concentration of all species present at equilibrium, the pH, and the percent dissociation of a 0.026 M solution. (Kw 1x10-1) [НСООН] [НCОО"] [H+= % dissociation pH =L_HO)