2. Write reactions to show the dissociation into ions of the following substances when they dissolve in water: a) sodium phosphate b) ammonium hydroxide

Explain why the neutralization reaction of a strong acid and a weak base gives a weakly acidic solution.

Differentiate between the terms strength and concentration as they apply to acids and bases. When is HCl strong? Weak? Concentrated? Dilute? Answer the same questions for ammonia. Is the conjugate base of a weak acid a strong base?

. Which component of a buffered solution is capable of combining with an added strong acid? Using your example from Exercise 60, show how this component would react with added HC1.

Write an equation that describes the equilibrium that exists when nitric acid dissolves in water. Identify each of the four species in solution as either Brnsted acids or Brnsted bases. Does the equilibrium favor the products or the reactants?

Two strategies are also followed when solving for the pH of a base in water. What is the strategy for calculating the pH of a strong base in water? List the strong bases mentioned in the text that should be committed to memory. Why is calculating the pH of Ca(OH)2 solutions a little more difficult than calculating the pH of NaOH solutions? Most bases are weak bases. The presence of what element most commonly results in basic properties for an organic compound? What is present on this element in compounds that allows it to accept a proton? Table 13-3 and Appendix 5 of the text list Kb values for some weak bases. What strategy is used to solve for the pH of a weak base in water? What assumptions are made when solving for the pH of weak base solutions? If the 5% rule fails, how do you calculate the pH of a weak base in water?

Rank the compounds in each of the following groups in order of increasing acidity or basicity, as indicated, and explain the order you assign. (a) acidity: HCI, HBr, HI. (b)basicity: H2O, OH-, H-, CI-. (c) basicity: Mg(OH)2, Si(OH)4, ClO3(OH) (Hint: Formula could also be written as HCIO4). (d) acidity: HF, H2O, NH3, CH4

8-111 The volume of an adult's stomach ranges from 50 mL when empty to 1 L when full. On a certain day, its volume is 600. mL and its contents have a pH of 2.00. (a) Determine the number of moles of present. (Chapter 4) (b) Assuming that all the H+ is due to HCl(aq), how many grams of sodium hydrogen carbonate, NaHCO3, will completely neutralize the stomach acid? (Chapter 4)

Question 8

Which of the following reactions represents a neutralization reaction? a. OH + HNO3 NO; + H20 b. HF+HSO; F+H2SO3 nust ... S| c. HCIO4+ H20 =H;O* + CIO4 d. KOH + HCl KCI + H2O a) В .. Identify e O b) C istry ... c) D of the strong ac O d) A 11:49 AM 4/23/2021 PrtSc Insert Delete F12 F11 F10 F8 F9 Backspace Num Lock 10 7 8. PgUp Home Enter 2 1 Shift End 4- L. 图