14.75b | Aspirin was discovered as a result of efforts to produce a derivative of salicylic acid

(17:10)

14.75b | Aspirin was discovered as a result of efforts to produce a derivative of salicylic acid

(1:49)

14.45 | The active ingredient formed by aspirin in the body is salicylic acid, C6H4OH(CO2H). The

(11:23)

14.75a | Salicylic acid, HOC6H4CO2H, and its derivatives have been used as pain relievers for a long

(22:14)

14.91a-b | A 5.36–g sample of NH4Cl was added to 25.0 mL of 1.00 M NaOH and the resulting solution

(21:22)

14.5b | Determine Ka for hydrogen sulfate ion, HSO4 −. In a 0.10-M solution the acid is 29% ionized.

(10:43)

14.87 | Calculate the pH of a buffer solution prepared from 0.155 mol of phosphoric acid, 0.250 mole

(9:24)

14.71 | Novocaine, C13H21O2N2Cl, is the salt of the base procaine and hydrochloric acid. The

(28:40)

Identifying Buffer Combinations

(5:23)

14.61 | Propionic acid, C2H5CO2H (Ka = 1.34 × 10^−5), is used in the manufacture of calcium

(11:24)

14.77 | Explain why a buffer can be prepared from a mixture of NH4Cl and NaOH but not from NH3 and

(6:56)

14.55 | Determine Kb for the nitrite ion, NO2−. In a 0.10-M solution this base is 0.0015% ionized.

(10:56)

14.48 | Which of the following will increase the percent of NH3 that is converted to the ammonium

(9:49)

pH of a H2SO4 solution

(6:36)

14.19b | Calculate the pH and the pOH of 0.21 M NaOH

(6:36)

14.85b | What is the effect on the concentration of ammonia, hydroxide ion, and ammonium ion

(2:38)

15.26b | Calculate the concentrations of ions in a saturated solution of BaF2

(7:15)