PPT-Acidic and Basic Character of Carboxylic Acids

194 Carboxylic acids are relatively strong acids Carboxylic acids have much lower pK a values than do alcohols The lowered pK a values are due to the electronwithdrawing effect of the positively polarized carbonyl carbon and the resonance stabilization of the carboxylate group. W. hat . is it like to eat a . lemon? . S. cientists . realized that the sour taste of a lemon is related to certain type of chemical when it is . present (hint: hydrogen ions . H. +. ).. And, vice versa, they also realized that the bitter taste of something is related to certain . Alcohols. Ethanol. Ethanol is produced from the fermentation of glucose. Glucose is often derived from the hydrolysis of more complex carbohydrates. (C. 6. H. 10. O. 5. ). n. + nH. 2. O . . nC. 6. 20-1. Carboxylic acid derivatives undergo substitution reactions via the (often acid- or base-catalyzed) addition-elimination sequence:. The relative reactivities of the substrates follow a consistent order:. Upon heating, a slower but thermodynamically more favorable reaction between the carboxylic acid and the amine takes place.. Dicarboxylic acids react with amines to give imides.. Imides, or the nitrogen analogs of cyclic anhydrides, can be formed through the reaction of a dicarboxylic acid and ammonia or a primary amine.. Carboxylic Acid Derivatives. Chapter 14. 1. Carboxylic acids. The . carboxyl group. consists of carbonyl and hydroxyl groups attached to the same carbon.. carb. onyl + hydr. oxyl. . = . carboxyl. An . And. Their Derivatives. Chem. 108. Chapter . 10. 1. Carboxylic acids . are strong organic acids which contain . the . carboxyl group . (. -COOH, -CO. 2. H. ). Carboxylic acids . are classified as . Functional groups. Acid and esters. . Formic acid. 14.1 . Karboxylsyrer. Structure. Carboxylic acid groups consist of two very polar functional groups. Carbonyl group. Hydroxyl group. Carboxylic acid groups are very polar. Debalina. . Mukhopadhyay. . . Containing carbon, hydrogen, nitrogen, oxygen. . Building blocks of protein. . Contain Amino group (NH2+) , carboxyl . group . (COO-) , Alkyl group (R ) / H . . alpha carbon contains the functional groups.. Assistance Lecturer . Amjad. Ahmed . Jumaa. IUPAC names of carboxylic acids . Reactions of the carboxylic acids. Aldehydes and ketones. 1. Nomenclature of the carboxylic acids: . 1-Common names:. Aliphatic carboxylic acids:. Jennie L. Borders. Section 19.1 – Acid-Base Theories. Acids have a . sour. taste, change the color of an . indicator. , can be strong or weak . electrolytes. in aqueous solution, and react with . Aldehyde, Ketone, and Carboxylic acids.. Functional Groups Reactivity. :. Functional groups play a significant role in increasing organic compound reactivity, by controlling the direction of the reactions.. Lecture No.2. Aldehyde, Ketone, and carboxylic acids. List of contents:. Aldehyde, Ketone, and carboxylic acids.. The carbonyl group.. Carbonyl Compounds. . Aldehydes and Ketones.. Biological Significance of Ketone Bodies.. Dr. . SHATHA . I AQEEL. 108 . Chem. Learning Objectives. Chapter nine introduces carboxylic acids and their derivatives. . by the end of this chapter the students . will . know :. The structure of carboxylic acids. Proteins. Part I. Dr. Ravish Chauhan. Associate Professor. IGN College, Ladwa. . . Amino Acids. . These are the compounds which contain both amino and carboxylic group.