What are the dissociation steps of the triprotic acid citric acid (C6H8O7)?

Expert Solution

Amanda K answered 9 months ago

Citric Acid (C6H8O7) is a triprotic acid (pKa1=3.13; pKa2=4.76; pKa3=6.40), whose acidic forms and weak conjugate...

Citric Acid (C6H8O7) is a triprotic acid (pKa1=3.13; pKa2=4.76; pKa3=6.40), whose acidic forms and weak conjugate bases are often used as buffers. Describe which forms and what concentrations would be used to design a buffer solution that provides a pH of 6 and that does not allow the pH to change more than 0.4 units when 0.005 M of HCl is added.

A white powder, consisting of a simple mixture of tartaric acid (C4H6O6) and citric acid (C6H8O7)...

A white powder, consisting of a simple mixture of tartaric acid (C4H6O6) and citric acid (C6H8O7) was analysed to determine the elemental composition. Combustion of a 495.3-mg sample produced 610.5 mg of CO2 and 180.6 mg of H2O. Use atomic masses: C 12.011; H 1.00794; O 15.9994. 1) Calculate the % hydrogen, by mass, in the sample. 2) Calculate the % oxygen, by mass, in the sample 3)Calculate the % citric acid, by mass, in the sample.

Citric acid (192.13 g/mol) is a triprotic acid with the following chemical formula: H3C6O7H5. The acid...

Citric acid (192.13 g/mol) is a triprotic acid with the following chemical formula: H3C6O7H5. The acid dissociation constants for citric acid are: Ka1 = 7.1 x 10^-4 M; Ka2 = 1.7 x 10^-5 M; Ka3 = 6.4 x 10^-6 M Describe how you would prepare at least 100.00 mL (you may make more) of a citrate buffer with a pH of about 4.40. You have available distilled water, volumetric flasks and any sodium salts you desire. You must indicate the...

1. Describe the reaction steps of the citric acid cycle with a focus on their control....

1. Describe the reaction steps of the citric acid cycle with a focus on their control. In addition discuss the energy provided to a living cell from the metabolism of one acetyl-CoA entering the citric acid cycle. biochemistry

What are the main products/reactants/steps for each: Glycolysis is part of cellular respiration: Citric Acid cycle...

What are the main products/reactants/steps for each: Glycolysis is part of cellular respiration: Citric Acid cycle part of cellular respiration Electron transport/oxidative phosphorylation part of cellular respiration

What happens during the citric acid cycle?

What is the predominant form of citric acid (H3C6H5O7) at pH 4.37 and pH 6.12? Citric...

What is the predominant form of citric acid (H3C6H5O7) at pH 4.37 and pH 6.12? Citric acid has pKa values of 3.128 (pKa1), 4.761(pKa2), and 6.396 (pKa3). (These are all multiple choice) Please help! PH 4.37 a) H2C6H5O7– b) H3C6H5O7 c)HC6H5O72– d) C6H5O73– PH 6.12 a)C6H5O73– b)H2C6H5O7– c)H3C6H5O7 d) HC6H5O72– What is the second most abundant species of citric acid at each pH? PH 4.37 a)H3C6H5O7 b)H2C6H5O7– c)HC6H5O72– d)C6H5O73– PH 6.12 a)HC6H5O72– b)H2C6H5O7– c)H3C6H5O7 d)C6H5O73–

inThe citric acid cycle there are three reactions of the citric acid cycle it's self that...

inThe citric acid cycle there are three reactions of the citric acid cycle it's self that are regulated: -citrate synthase which is where ATP inhibits in in citeo -isocitrate dehydrogenase: alosterrically activated by Ca2+ and ADP also is inhibited by NADH - alpha ketoglutarate dehydrogenase which is where Ca2+ increases the rate of formation of succinyl-CoA what would happen if all three of these reactions were not present? what would happen if citrate synthase was not functioning, what would happen...

What is the role of the citric acid cycle? In metabolism and in biosynthesis?

What role does the citric acid cycle play in amino acid metabolism?

What role does the citric acid cycle play in amino acid metabolism?a. breakdown of glucogenic amino acids feeds metabolites into the citric acid cycleb. amino acid synthesis often relies on intermediates of the citric acid cyclec. breakdown of ketogenic amino acids feeds metabolites into the citric acid cyclea, b, & ca & b

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