Question

1) An Arrhenius acid is defined as a substance which: A) increases [H+] when placed in water C) decreases [H+] when placed in water B) acts as proton acceptor in any system D) acts as proton donor in any system 2) Which of the following is a correct balanced equation for the neutralization reaction that occurs between Al(OH)3 and HCl(aq)? A) Al(OH)3 + HCl(aq) → AICI3 + H20 B) Al(OH)3 + 3 HCI (aq) → AICI3 + H+ + OH- C) Al3+ + OH- + H+ + Cl- AICI3 + H20 D) Al(OH)3 + 3 HCI (aq) + AICI3 + 3 H20 3) A Brønsted-Lowry base is defined as a substance which: A) increases [H+] when placed in water C) decreases (H+] when placed in water B) acts as proton acceptor in any system D) acts as proton donor in any system 4) What is the name for the cation when an acid dissolves in water? A) Hydronium ion B) Hydroxide ion C) Hydride ion D) Hydrogen ion 5) Which of the following cannot act as a Brønsted-Lowry acid? A) H20 B) HS- C) HSO4 D) CO32- 6) The process by which water ionizes into hydronium ions and hydroxide is called the A) autoneutralization B) autonomic C) autoprotic of water. D) autoionization 7) In a basic solution, pH is A) > 7. < 1 x 10-7 M and [H3O+] is ) <7, < 1 x 10-7 M B c) < 7,> 1 x 10-7 M D ) = 7, 1 10-7 M 8) Calculate the [H3O+] and the pH of a 0.021 M HNO3 solution. A) 4.8 * 10-13 M and 12.32 B) 4.8 10-13 M and -12.32 C) 0.021 M and -1.68 D) 0.021 M and 1.68 9) Which of the following buffers is the one that is mainly contained in our blood? A) NH4+/NH3 B) HPO42-/PO43- C) HC2H302/C2H302 D) H2CO3/HCO3- 10) When a person hyperventilates the condition is known as: A) respiratory acidosis C) metabolic acidosis B) respiratory alkalosis D) metabolic alkalosis

Answer 1

Answer

(A) increases (at] when placed in water - 2 (0) Allon) + 3410 ay Ally + 340 3 (c) decreases [M] when placed in water (A) Hydronium den HA aid - + Ho water 40 + A hydnium - O Cop 2 - It is not a 4t donar as it das - not have it in its chemical formula) to auto ionisation for self causation ан, о — н,о" ном in - ag. medium A 7, L 1 x 107 M 4 No, completely dissociates Hot] - (HNO₃ ] = 0.021 M pu = -log [hot] - = -log [ 0.021 -- (-1.68) to pH = +1.66