Carbon acids strengths

Perfluorinated carboxylic acids are corrosive liquids or solids. The acids are completely ionized in water. The acids are of commercial significance because of their unusual acid strength, chemical stabiUty, high surface activity, and salt solubiUty characteristics. The perfluoroaLkyl acids with six carbons or less are hquids the higher analogues are soHds (Table 1). 

Under the conditions of temperature and ionic strength prevailing in mammalian body fluids, the equilibrium for this reaction lies far to the left, such that about 500 CO2 molecules are present in solution for every molecule of H2CO3. Because dissolved CO2 and H2CO3 are in equilibrium, the proper expression for H2CO3 availability is [C02(d)] + [H2CO3], the so-called total carbonic acid pool, consisting primarily of C02(d). The overall equilibrium for the bicarbonate buffer system then is... 

Fig. 28. Effect of acid strength, space velocity, and activated carbon on S02 removal and conversion to acid at 80°C in an intermittantly flushed trickle bed for r = 60 min and s = 0.1. (Figure reproduced from Metzinger et ai, 1994, with permission, 1994 Elsevier Science Ltd.)...

XL30). Mossbauer spectroscopy (KFKIj was applied to follow the state of Fe species in the zeolites. Carbon monoxide and ammonia adsorption (monitored with FTIR) (EQUINOX 55) was used to determine the nature, concentration and acid strength of the active sites in the Fe-TON zeolites. 

Carbonate also forms a mononuclear complex (132). Using an (ionic strength and temperature adjusted) value of log /32 for the formation of carbonic acid, CO + 2H+ C02(aq) + H20, of 15.92 (11), log K for the equilibrium Be2+ + C03 BeC03(aq) was derived as 5.4. The other carbonato species formed were assigned the formulas Be3(0H)2(HC03)3+ and Be5(0H)4(C03)4+, since the Raman spectra of the coordinated carbonate appeared to be different in the two complexes, but the structures proposed for these species are not imme-... 

Consider as an example the standardization of a solution of hydrochloric acid by titration against a weighed amount of sodium carbonate. The strength of the hydrochloric acid will be computed from... 

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