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EBK ORGANIC CHEMISTRY
- For each of the following reactions predict whether the equilibrium lies predominantly to the left or to the right. Explain your prediction briefly. (a) HCO3(aq) + SO42(aq) CO32(aq) + HSO4(aq) (b) HSO4(aq) + CH3CO2(aq) SO42(aq) + CH3CO2H(aq) (c) [Co(H2O)6]2+(aq) + CH3CO2(aq) [Co(H2O)5(OH)]+(aq) + CH3CO2H(aq)arrow_forwardAbout this time, you may be wishing you had an aspirin. Aspirin is an organic acid with a Ka of 3.27 104 for the reaction. HC9H7O4(aq) + H2O() C9H7O4(aq) + H3O+(aq) If you have two tablets, each contains 0.325 g of aspirin (mixed with a neutral binder to hold the tablet together), and you dissolve then in a glass of water to give 225 mL of solution, what is the pH of the solution.arrow_forwardFor each value of Ka, calculate the corresponding value of pKa. Which compound is the stronger acid? (a) Acetic add, Ka = 1.74 105 (b) Chloroacetic acid, Ka= 1.38 103arrow_forward
- What are the products of each of the following acid-base reactions? Indicate the acid and its conjugate base and the base and its conjugate acid. HC1O4+ H2O — NH/ + H2O -» HCOr + OH" —arrow_forward8-15 Write an equation for the reaction that takes place when each base is added to water. (a) LiOH (b) (CH3)2NH (c) Sr(OH)2 (d) CH3CH2NH2arrow_forwardWhich of the following will increase the percent of NH3 that is converted to the ammonium ion in water (Hint: Use LeChatelier’s principle.)? (a) addition of NaOH. (b) addition of HCl. (c) addition of NH4Clarrow_forward
- Barbituric acid, HC4H3N2O3, is used to prepare barbiturates, a class of drugs used as sedatives. Its Ka is 9.8105. Calculate [H+] in solutions prepared by adding enough water to the following to make 1.45 L. (a) 0.344 mol (b) 28.9 garrow_forwardConsider these acids (a) Arrange the acids in order of increasing acid strength from weakest to strongest. (b) Which acid has the smallest pKa value?arrow_forwardHow is acid strength related to the value of Ka? What is the difference between strong acids and weak acids (see Table 13-1)? As the strength of an acid increases, what happens to the strength of the conjugate base? How is base strength related to the value of Kb? As the strength of a base increases, what happens to the strength of the conjugate acid?arrow_forward
- Which has the larger numerical value? (a) The pKa of a strong acid or the pKa of a weak acid (b) The Ka of a strong acid or the Ka of a weak acidarrow_forwardCalculate Ka for the weak acids that have the following PKa values. (a) 3.9(b) 10.12 (c) 13.07arrow_forwardSulfanilic acid, which is used in making dyes, is made by reacting aniline with sulfuric acid. (a) Is aniline a Brnsted base, a Lewis base, or both? Explain, using its possible reactions with HCl, BF3, or other acid. (b) Sulfanilic acid has a pKa value of 3.23. The sodium salt of the acid, Na(H2NC6H4SO3), is quite soluble in water. If you dissolve 1.25 g of the salt in water to give 125 ml, of solution, what is the pH of the solution?arrow_forward
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