5. For each of the following, give the conjugate acid and the conjugate base. Type subscript numbers where they occur and use before superscripts (so H3O2+ would be entered as H302^+). For ions with more than one charge on them, put the number before the plus or minus sign, so CO3^2- for example. a. HCO3 Conjugate Acid: Conjugate Base: Submit Answer Tries 0/2 b. HSO4 Conjugate Acid: Conjugate Base: Submit Answer Tries 0/2 c. H₂O₂ Conjugate Acid: Conjugate Base: Submit Answer Tries 0/2 d. H2PO4 Conjugate Acid: Conjugate Base: Submit Answer Tries 0/2 e. H30₂+ Conjugate Acid: Conjugate Base: Submit Answer Tries 0/2

Using the diagrams shown in Problem 10-37, which of the four acids is the weakest acid?

Write the formula and name for the conjugate acid of the following substances. (The information in Tables 15.6 and 15.8 may be helpful.) (a) N2H4 (b) NO2 (c) ClO4 (d) I

Are solutions of the following salts acidic, basic, or neutral? For those that are not neutral, write balanced chemical equations for the reactions causing the solution to be acidic or basic. The relevant Ka and Kb values are found in Tables 13-2 and 13-3. a. NaNO3 b. NaNO2 c. C5H5NHClO4 d. NH4NO2 e. KOCl f. NH4OCl

Write a formula for the conjugate base formed when each of the following behaves as a Brnsted acid: a. HSO3 b. HPO42 c. HClO3 d. CH3NH3+ e. H2C2O4

In the following net ionic reaction, identify each species as either a Brnsted-Lowry acid or a Brnsted -Lowry base: CH3COO(aq)+HS(aq)CH3COOH(aq)+S2(aq). Identify the conjugate of each reactant and state whether it is a conjugate acid or a conjugate base.

Are solutions of the following salts acidic, basic, or neutral? For those that are not neutral, write balanced equations for the reactions causing the solution to be acidic or basic. The relevant Ka, and Kb values are found in Tables 13-2 and 13-3. a. Sr(NO3)2 b. NH4C2H3O2 c. CH3NH3Cl d. C6H5NH3ClO2 e. NH4F f. CH3NH3CN

. Strong buses are bases that completely ionize in water to produce hydroxide ion, OH-. The strong bases include the hydroxides of the Group I elements. For example, if 1.0 mole of NaOH is dissolved per liter, the concentration of OH ion is 1.0 M. Calculate the [OH-], pOH, and pH for each of the following strong base solutions. a. 1.10 M NaOH b. 2.0104M KOH c. 6.2103M CsOH d. 0.0001 M NaOH

Two strategies are followed when solving for the pH of an acid in water. What is the strategy for calculating the pH of a strong acid in water? What major assumptions are made when solving strong acid problems? The best way to recognize strong acids is to memorize them. List the six common strong acids (the two not listed in the text are HBr and HI). Most acids, by contrast, are weak acids. When solving for the pH of a weak acid in water, you must have the Ka value. List two places in this text that provide Ka values for weak acids. You can utilize these tables to help you recognize weak acids. What is the strategy for calculating the pH of a weak acid in water? What assumptions are generally made? What is the 5% rule? If the 5% rule fails, how do you calculate the pH of a weak acid in water?

Boron trifluoride, BF3, and diethyl ether, (C2H5)2O, react to produce a compound with the formula BF3 : (C2H5)2O. A coordinate covalent bond is formed between the boron atom on BF3 and the oxygen atom on (C2H5)2O. Write the equation for this reaction, using Lewis electron-dot formulas. Label the Lewis acid and the Lewis base. Determine how many grams of BF3: (C2H5)2O are formed when 9.10 g BF3 and 23.3 g (C2H5)2O are placed in a reaction vessel, assuming that the reaction goes to completion.