(a)
Interpretation:
The name of the carboxylate ion that is formed from pentanoic acid has to be given.
Concept Introduction:
The name of the
Carboxylate ion is the negative ion which is formed when one or more acidic protons are lost from carboxylic acid.
Carboxylate ions are named from the parent acid by replacing the suffix “-ic acid” with “-ate”.
(b)
Interpretation:
The name of the carboxylate ion that is formed from citric acid has to be given.
Concept Introduction:
The name of the carboxylic acid itself implies that it is acidic. Addition of carboxylic acid to water results in ionization. Hydrogen ion transfer occurs from carboxylic acid to water and hydronium ion is formed. Carboxylate ion is also formed due to the loss of hydrogen ion from carboxylic acid.
Carboxylate ion is the negative ion which is formed when one or more acidic protons are lost from carboxylic acid.
Carboxylate ions are named from the parent acid by replacing the suffix “-ic acid” with “-ate”.
(c)
Interpretation:
The name of the carboxylate ion that is formed from succinic acid has to be given.
Concept Introduction:
The name of the carboxylic acid itself implies that it is acidic. Addition of carboxylic acid to water results in ionization. Hydrogen ion transfer occurs from carboxylic acid to water and hydronium ion is formed. Carboxylate ion is also formed due to the loss of hydrogen ion from carboxylic acid.
Carboxylate ion is the negative ion which is formed when one or more acidic protons are lost from carboxylic acid.
Carboxylate ions are named from the parent acid by replacing the suffix “-ic acid” with “-ate”.
(d)
Interpretation:
The name of the carboxylate ion that is formed from oxalic acid has to be given.
Concept Introduction:
The name of the carboxylic acid itself implies that it is acidic. Addition of carboxylic acid to water results in ionization. Hydrogen ion transfer occurs from carboxylic acid to water and hydronium ion is formed. Carboxylate ion is also formed due to the loss of hydrogen ion from carboxylic acid.
Carboxylate ion is the negative ion which is formed when one or more acidic protons are lost from carboxylic acid.
Carboxylate ions are named from the parent acid by replacing the suffix “-ic acid” with “-ate”.
Want to see the full answer?
Check out a sample textbook solutionChapter 16 Solutions
EBK GENERAL, ORGANIC, AND BIOLOGICAL CH
- Glutamic acid (1one of the 20 amino acids) has a side- chain carboxyl group (COOH, pKa = 4.3) as shown in Figures 4.7 and 4.8 a. Write the chemical equation for the dissociation of the side chain COOH. Label the weak acid and the conjugate base. b. The Henderson-Hasselbalch Equation (shown below) can be used to determine the ionization status of a weak acid: pH = pKa + log [base] Use the Henderson Hasselbalch equation to determine whether the glutamic acid side chain [acid] • carboxyl group is protonated or deprotonated at physiological pH.arrow_forwardThis is all part of one question. It goes together. (I wrote D and E that were cut off from the picture.) Please help me solve this since it all follows a line.D. At which pH value does the amino group of amino acid have the best buffering capacity?9.009.691.536.013.0010.5E. What is the pI (isoelectric point)?pI=arrow_forwardRefer to the following titration curve below: 13 12 11 10 7 6 5 4 4 6 8 10 12 14 16 18 20 22 24 26 28 30 Volume of Titrant / mL - Unknown Acid 0.10 mol/L - titrant = NaOH 0.1 mol/L What is the isoelectric point of histidine, according to the titration curve? Input your answer until the first decimal point. 2. 9,arrow_forward
- Refer to the following titration curve below: 13 12 11 10 9 7 6 5 4 3 4 6 8 10 12 14 16 18 20 22 24 26 28 30 Volume of Titrant / mL - Unknown Acid 0.10 mol/L - titrant = NaOH 0.1 mol/L At ph 10.0, which form of histidine is most abundant? His2+ His- His° His+arrow_forwardb) Determine which ionization state corresponds to aspartic acid (shown below) at pH 1, 7, and 10 by selecting the most suitable answer from the statements i-iv. The pK of the amine, carboxylic acid, and side chain of aspartic acid are 9.6, 1.88 and 3.65, respectively. ОН ÓH ÑH2 i) the amine is charged; the carboxylic acids are neutral. ii) the amine and carboxylic acids are all charged. iii) the amine is neutral, and the carboxylic acids are charged. iv) the amine and the carboxylic acids are all neutral. pH Statement (i, ii, iii, or iv) 1 7 10 %3Darrow_forwardThe fosfomycin disc (200/50) also contains glucose-6-phosphate (G-6-P). Which ONE of the following best describes why this is the case? Select one: A. G-6-P increases the solubility of fosfomycin B. G-6-P is used to promote active transport of fosfomycin into the bacterial cell C. G-6-P is used in the formulation to correct glucose deficiencies promoted by fosfomycin D. G-6-P stabilises fosfomycin from spontaneous hydrolysis in aqueous solution E. G-6-P is an inhibitor of FosA that inactivates fosfomycinarrow_forward
- A 100 ml solution of 0.1 M amino acid (AA) at ph 1.0 was titrated with NaOH solution. The pH was monitored, and the results were plotted on the graph. The keypoints in the titration are designated I to VII. What is the possible identity of the amino acid? What is the isoelectric point of AA? what is the pKa corresponding to the dissociation of the alpha carboxylic group? Region/point where AA is predominantly present as a (-1) charged species? The effective buffering range for the amino acid in the acidic region? Region/point where the solution has 50:50 percent mixture of the (0) and (-1) speciesarrow_forwardThe initial pH of a 0.2M arginine solution is 14. a. What is the predominant structure of arginine in solution at this pH? b. Draw the titration curve that would result if this solution were titrated with 1M HCl to pH 7.arrow_forwardMatch the chemical properties with the amino acid (note: the charges are not indicated on the charged amino acids) A. NH3+ - CH - COO- I (CH)2 I OH N,N - DimethyltryptamineAspartic acid B. NH3+ - CH - COO- I (CH)4 I NH2 Which one of each of these is: uncharged and polar charged and non-polar negatively charged and polar positively charged and polararrow_forward
- Alginic acid, isolated from seaweed and used as athickening agent for ice cream and other foods, is apolymer of d-mannuronic acid with b(1,4) glycosidiclinkages.a. Draw the structure of alginic acid.b. Why does this substance act as a thickening agent?arrow_forwardWe know that some reactions involving loss of water are reversible upon the addition of water (Le Chatelier's Principle). If we heat oleandrin in a solution of acidic water, what would remain attached to the steroid skeleton? Select the correct answer. E он он A Oleandrin is a toxic cardiac glycoside found in the poisonous plant, oleander (Nerium oleander L). It has a very long IUPAC name: acetic acid [(35,5R, 10S,13R,14S,16S, 17'R)-14-hydroxy-3-[[(2R,4S,5S,6S)-5-hydroxy-4-methoxy-6-methyl- 2-tetrahydropyranyl]oxy]-10,13-dimethyl-17-(5-oxo-2H-furan-3-y)-1,2,3,4,5,6,7,8,9,11,12,15,16,17- tetradecahydrocyclopenta[a]phenanthren-16-yl) ester F D E D E OH B он B он (a) no reaction он A (b) он он OH он OH он E он он (c) C он но (d)arrow_forwardIdentify the conjugate acid-base pairs in the following reactions: HNO2(aq) + H2O(l) → NO2 – (aq) + H3O+(aq) _______ ______ _________ ________ CH3NH2 + H2O(l) → CH3NH3+ + OH – _______ ________ ________ _________arrow_forward