1
answer
0
watching
237
views
18 Nov 2019
Acid-base properties of HCO_3^1-: a) Write two equations for the reaction of HCO_3^1- with water: in one equation HCO_3^1- is reacting like an acid and in the other equation HCO_3^1- is reacting like a base. Identify the conjugate acid-base pairs in each equation. b) Explain how the reactions you did in Experiment D show that the HCO_3^1- ion is both an acid and a base. c) Based on the pH of the NaHCO_3 solution is the HCO_3^1- ion a stronger acid or a stronger base? Explain your reasoning. d) HCO_3^1- is the conjugate base of H2CO_3 (seltzer) and HCO_3^1- is the conjugate acid of CO_3^2-. i. Based on your pH data which is the stronger acid, H_2CO_3 or HCO_3^1-? ii. Based on your pH data which is the stronger base, HCO_3^1- or CO_3^2-? iii. Are your results consistent with the Bronsted-Lowry acid-base model? Use your data to support your answer. e) Write an equation for the reaction of H_2CO_3 with CO_3^2-. i. Based on your answer to the previous question is the equilibrium more favorable going to the right or to the left? ii. Which species would you expect to find in solution if you mixed equal quantities of H_2CO_3 and CO_3^2-? iii What would you predict the pH of the resulting solution to be?
Acid-base properties of HCO_3^1-: a) Write two equations for the reaction of HCO_3^1- with water: in one equation HCO_3^1- is reacting like an acid and in the other equation HCO_3^1- is reacting like a base. Identify the conjugate acid-base pairs in each equation. b) Explain how the reactions you did in Experiment D show that the HCO_3^1- ion is both an acid and a base. c) Based on the pH of the NaHCO_3 solution is the HCO_3^1- ion a stronger acid or a stronger base? Explain your reasoning. d) HCO_3^1- is the conjugate base of H2CO_3 (seltzer) and HCO_3^1- is the conjugate acid of CO_3^2-. i. Based on your pH data which is the stronger acid, H_2CO_3 or HCO_3^1-? ii. Based on your pH data which is the stronger base, HCO_3^1- or CO_3^2-? iii. Are your results consistent with the Bronsted-Lowry acid-base model? Use your data to support your answer. e) Write an equation for the reaction of H_2CO_3 with CO_3^2-. i. Based on your answer to the previous question is the equilibrium more favorable going to the right or to the left? ii. Which species would you expect to find in solution if you mixed equal quantities of H_2CO_3 and CO_3^2-? iii What would you predict the pH of the resulting solution to be?
Deanna HettingerLv2
31 May 2019