The trend in acid strength has to be explained. Concept Introduction: A carboxylic acid can behave as a stronger bronsted acids when the hydrogen atom of alpha carbon is replaced by an anion. This condition is enhanced by: ( 1 ) The presence of electronegative atom. ( 2 ) The Greater positive formal charge on the central atom. ( 3 ) The Possibility of resonating structures for the anion that delocalize the negative charge on the anion, which lead to stability.
The trend in acid strength has to be explained. Concept Introduction: A carboxylic acid can behave as a stronger bronsted acids when the hydrogen atom of alpha carbon is replaced by an anion. This condition is enhanced by: ( 1 ) The presence of electronegative atom. ( 2 ) The Greater positive formal charge on the central atom. ( 3 ) The Possibility of resonating structures for the anion that delocalize the negative charge on the anion, which lead to stability.
Solution Summary: The author explains that a carboxylic acid behaves as stronger bronsted acids when the hydrogen atom of alpha carbon is replaced by an anion.
Definition Definition Class of organic compounds that contain a carboxyl group ( - COOH ) and has a general formula R - COOH or R - CO 2 H , where R refers to the alkyl, alkenyl, aryl, or other groups. They can undergo different chemical reactions, such as acid-base reactions, esterification, and oxidation. These are essential components of living organisms, playing important roles in metabolic processes, signaling, and as pharmaceuticals.
Chapter 16, Problem 112IL
(a)
Interpretation Introduction
Interpretation:
The trend in acid strength has to be explained.
Concept Introduction:
A carboxylic acid can behave as a stronger bronsted acids when the hydrogen atom of alpha carbon is replaced by an anion. This condition is enhanced by:
(1) The presence of electronegative atom.
(2) The Greater positive formal charge on the central atom.
(3) The Possibility of resonating structures for the anion that delocalize the negative charge on the anion, which lead to stability.
(b)
Interpretation Introduction
Interpretation:
The trend in acid strength and the acid which have the highest pH and which have the lowest pH is to be stated.
Concept Introduction:
The pH is a measure of Hydronium ion concentration. The expression for pH is,
pH=−log[H3O+] (1)
Higher the value of Ka, stronger the acid and for the acidic solution pH<7, which means higher the value of Ka, smaller the value of pH.
The pKb of the organic base nicotine (denoted Nic) is 5.98. Write the corresponding protonation reaction, the deprotonation reaction of the conjugate acid, and the value of pKa for nicotine.
Acidified potassium bromate(V), KBrO3, reacts with hydrogen sulfide, H2S, to give a yellow solid and an orange solution. On shaking the solution with trichloroethane, the trichloroethane layer turned orange-red.
(a) Suggest the identity of yellow solid and the orange solution. Describe the type of reaction taking place.
(b) Construct a balanced equation for the reaction between KBrO3 and H2S.
(C) BrO3- is the conjugate base of HBrO3. Draw the dot and cross structure of HBrO3.
(d) HBr is a stronger acid than HCl. However, HBrO3 is a weaker acid than HCIO3. Explain the difference in acidities.
What is a weak acid?
Arrange the following acids in aqueous solution in order of increasing acid strength
NH4+ , H2SO4 , CH3CO2H
Explain your reasoning