University:
Boston University
Course:
CAS CH 101 | General Chemistry 1
Academic year:

2023
Views:

455

Pages:

2
Author:

Shyanne Fernandez

Carbonic acid 1 What is the O-C-O bond angle in CO2? A B C D 2 CO2 reacts with water to form carbonic acid, H2CO3 = (HO)2CO. What is the O-C-O bond angle in carbonic acid? A B C D 3 180o 120o 109o None of the above Hydrogen carbonate ion reacts with water to form carbonate ion, CO32-. What is the O-C-O bond angle in carbonate ion? A B C D 6 180o 120o 109o None of the above Carbonic acid reacts with water to form hydrogen carbonate ion, (HO)CO2-. What is the H-O-C bond angle in hydrogen carbonate ion? A B C D 5 180o 120o 109o None of the above Carbonic acid reacts with water to form hydrogen carbonate ion, (HO)CO2-. What is the O-C-O bond angle in hydrogen carbonate ion? A B C D 4 109o 120o 180o None of the above 180o 120o 109o None of the above Estimate the pH assuming 0.035 M carbonic acid reacts with water 100% to form hydrogen carbonate ion, (HO)2CO(aq) + H2O(l) <--> H3O+(aq) + HOCO2-(aq) A B C D pH = -log(3.5 x 10-2) = 1.0 pH = -log(3.5 x 10-2) = 1.5 pH = -log(3.5 x 10-2) = 2.0 pH = -log(3.5 x 10-2) = 3.5 Carbonic acid 7 Estimate the pH assuming 0.035 M carbonic acid reacts with water 100% to form carbonate ion, (HO)2CO(aq) + 2 H2O(l) <--> 2 H3O+(aq) + CO32-(aq) A B C D pH = -2 x log(3.5 x 10-2) = 3.0 pH = -2 x log(3.5 x 10-2) = 3.0 pH = -2 x log(3.5 x 10-2) = 4.0 None of these