Citric acid H3C6H5O7 isa weak polyprotic acid. It is described by the following series of deprotonation reactions:
H3C6H5O7 <-> H+ +H2C6H5O7-Ka1=7.4*10^-4
H2C6H5O7 <->H+ +HC6H5O72-Ka2=1.7*10^-5
HC6H5O7 <-> H+ +C6H5O73- Ka3=4.0*10^-7
Calculate the concentration of Citric acid using the expression of α equilibrium.
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Citric acid H3C6H5O7 isa weak polyprotic acid. It is described by the following series of deprotonation...
Calculate the pH and the equilibrium concentrations of H2C6H5O7-, HC6H5O72- and C6H5O73- in a 0.1840 M aqueous citric acid solution. For H3C6H5O7, Ka1 = 7.4×10-3, Ka2 = 1.7×10-5, and Ka3 = 4.0×10-7 pH = [H2C6H5O7-] = __M [HC6H5O72-] =__ M [C6H5O73-] = __M
What is the pH of a 1.48M solution of citric acid? Ka1 = 7.4 x 10-4 Ka2 = 1.7 x 10-5 Ka3 = 4.0 x 10-7
Polyprotic acids contain more than one dissociable proton. Each dissociation step has its own acid-dissociation constant, Ka1, Ka2, etc. For example, a diprotic acid H2A reacts as follows: H2A(aq)+H2O(l)⇌H3O+(aq)+HA−(aq) Ka1=[H3O+][HA−][H2A] HA−(aq)+H2O(l)⇌H3O+(aq)+A2−(aq) Ka2=[H3O+][A2−][HA−] In general, Ka2 = [A2−] for a solution of a weak diprotic acid because [H3O+]≈[HA−]. Many household cleaning products contain oxalic acid, H2C2O4, a diprotic acid with the following dissociation constants: Ka1=5.9×10−2, Ka2=6.4×10−5 Part A) Calculate the equilibrium concentration of H3O+ in a 0.20 M solution of oxalic...
When you squeeze lemon juice or lime juice on an avocado to keep it from turning brown you are using the preservative power of citric acid. Citric acid, H3C6H507, is a polyprotic acid, which is widely used a preservative as well as a flavoring agent. Kal = 7.4 x 10-4, Ka2 = 1.7 x 10-5, and Ka3 = 4.0 x 10-7 In a 0.200 M solution of NaH2C6H507 (sodium dihydrogen citrate), what is your primary citrate containing species in solution?...
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Use the given information to answer the following questions with corresponding answers. (a) Consider the following dissociation reactions of glycine that can have three different forms in solution: H2G+, HG, or G-. : H2G+ ⟺ HG + H+ Ka1 = 4.6 × 10-3 HG ⟺ G- + H+ Ka2 = 2.5 × 10-10 Determine the dissociation constant for G- + H2O ⇔ HG + OH-. Group of answer choices 4.0 ×× 10-9 4.0 ×× 10-5 2.2 ×× 10-12 3.5 ×× 10-6 2.9 ××...
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