$$\mathrm{pOH = -\log(3.5 \times 10$$^{-2}$$) = 1.46}$$

$$[H_3O^+][OH^-] = 1 \times 10$$^{-14}$$

Question 1

Which of the following statements best distinguishes between the Arrhenius and Brønsted-Lowry definitions of acids and bases?

Accepted Answer

Arrhenius acids produce H+ in water, while Brønsted-Lowry acids donate H+ to any base.

Question 2

Which of the following is the correct net-ionic equation for the ionization of ammonia in water?

Accepted Answer

$$\mathrm{NH_3$(aq) + H_2O(l) \rightleftharpoons NH_4$^+(aq) + OH^-(aq)}$$

Question 3

Which part of a simple amine molecule is responsible for its basicity?

Accepted Answer

The lone pair of electrons on the nitrogen atom

Question 4

What is the conjugate acid of $$\mathrm{CO_3$^{2-}}$$?

Accepted Answer

$$\mathrm{$$HCO_3$$^-}$$

Question 5

Which of the following is a strong acid?

Accepted Answer

$$\mathrm{$$HClO_4$$}$$

Question 6

A solution has $$[OH^-] = 3.5 	imes 10$$^{-2}$$\ \mathrm{M}. $$What is the pOH of the solution?

Accepted Answer

$$\mathrm{pOH = -\log(3.5 	imes 10$$^{-2}$$) = 1.46}$$

Question 7

Which of the following salts will produce a basic solution when dissolved in water?

Accepted Answer

NaC$$_2H$_3O$_2$$

Question 8

What is the pH of a 0.20 M solution of HCl?

Accepted Answer

$$\mathrm{pH = -\log(0.20) = 0.70}$$

Question 9

Which of the following best explains why HF is a weak acid while HCl is a strong acid?

Accepted Answer

The F– ion holds onto the proton more tightly than Cl– due to its higher electronegativity and smaller size.

Question 10

Which of the following is the correct expression for the ion product of water at 25°C?

Accepted Answer

$$[H_3O^+][OH^-] = 1 	imes 10$$^{-14}$$

Question 11

A 0.10 M solution of NH$$_4Cl $$has a pH less than 7. Which reaction explains this observation?

Accepted Answer

$$\mathrm{NH_4$^+ (aq) + H_2O(l) \rightleftharpoons NH_3$(aq) + H_3O^+(aq)}$$

Question 12

Which of the following is a Lewis acid in the reaction $$\mathrm{Ag^+ + 2NH_3 \rightarrow [Ag(NH_3$)_2]^+}$$?

Accepted Answer

$$\mathrm{Ag^+}$$

Question 13

Which of the following factors increases the strength of an oxoacid H-O-Y?

Accepted Answer

Increasing the electronegativity of Y

Question 14

What is the correct name for the coordination compound $$\mathrm{K[Pt(NH_3$)Cl_5$]}$$?

Accepted Answer

Potassium amminepentachloridoplatinate(IV)

Question 15

Which of the following is the correct order of acid strength for the binary acids HCl, HF, and HI?

Accepted Answer

$$\mathrm{HI \u003e HCl \u003e HF}$$

Question 16

Which of the following best describes a chelating agent?

Accepted Answer

A ligand that forms more than one coordinate covalent bond to a metal ion

Question 17

What is the pH of a solution with $$[H_3O^+] = 7.2 	imes 10$$^{-9}$$\ \mathrm{M}$$?

Accepted Answer

$$\mathrm{pH = -\log(7.2 	imes 10$$^{-9}$$) = 8.14}$$

Question 18

Which of the following best describes the relationship between Ka and acid strength?

Accepted Answer

A larger Ka value indicates a stronger acid.

Acids, Bases, and Coordination Chemistry: General Chemistry II Study Guide

Study Guide - Practice Questions