Home
Class 12
CHEMISTRY
Assertion : p-Amino benzoic acid exitss ...

Assertion : p-Amino benzoic acid exitss as Zwitter ion whereas p-aminobenzene sulphonic acid does not.
Reason : `-SO_(3)H` group is less acidic than carboxyl group.

A

Both assertion and reason are true and reason is the correct explanation of assertion

B

Both assertion and reason are true and reason is not the correct explanation of assertion

C

Assertion is true and reason is false

D

Both assertion and reason are false

Text Solution

Verified by Experts

Promotional Banner

Topper's Solved these Questions

  • CARBOXYLIC ACIDS

    BRILLIANT PUBLICATION|Exercise LEVEL-II|27 Videos

  • CARBOXYLIC ACID & THEIR DERIVATIVES

    BRILLIANT PUBLICATION|Exercise LEVEL-III (Linked Comprehension Type)|12 Videos

  • CHEMICAL KINETICS

    BRILLIANT PUBLICATION|Exercise LEVEL II|75 Videos

Similar Questions

Explore conceptually related problems

p-Nitrobenzoic acid is a stronger acid than benzoic acid. This is due to

Assertion : m-chlorobenzoic acid is a stronger acid than p-chlorobenzoic acid Reason : In p-chlorobenzoic acid both -I and +R effect of chlorine operate but in m-chlorobenzoic acid only -I effect of chlorine operates.

Assertion : p-chlorobenzoic acid is more acidic than p-fluorobenzoic acid. Reason : +R effect of fluorine is higher than that of chlorine due to the matching size of carbon and fluorine.

Assertion : Saicylic acid is stronger than m and p-hydroxy benzoic acid. Reason : Carboxylate ion is stabilized by intramolecular H-bonding.

Following are a group of compounds showing acidic behaviour: Phenols are less acidic than carboxylic acids. Why?

Assertion: The bond angle in alcohols is slightly less than the tetrahedral angle. Reason: In alcohols, the oxygen.of -OH group is attached to carbon by a sigma bond formed by the overlap of a sp^3 hybridised orbital of carbon with sp^3 hybridised orbital of oxygen.

Assertion: van't Hoff factor for benzoic acid in benzene is less than one Reason: Benzoic acid behave as a weak electrolytein benzene.

Assign the possible reason for the following:- H_2O is less acidic than H_2S .

When benzene sulphonic acid and p-nitrophenol are treated with NaHCO_(3) , the gases released, respectively, are :

Paragraph Carboxylic acids are distinctly acidic because they ionize in water to give hydronium ions: RCOOH+H_(2)O hArr RCOO^(-) +H_(3)O^(+) The acidic strength depends upon the extent of ionizations of the acid and the stability of the anion formed. The acidic strength can also be expressed in terms of dissociation constant K_(a) or pK_(a) which are related as pK_(a)= -log K_(a) . Most unsubstituted carboxylic acids have K_(a) values in the range of 10^(-4) to 10^(-5) (pK_(a) =4-5) . The substitutents have marked effect on the acidic strength of carboxylic acids. Any group that stabilizes the carboxylate ion more than the carboxylic acid group will increase the acidic strength, and the group which destabilizes the carboxylate group more than the carboxylic acid group will decrease the acidic strength. In a similar manner, the electron-releasing groups makes benzoic acid weaker, while the electron-withdrawing groups make benzoic acid stronger. The ortho isomer of every substituted benzoic acid (whether electron releasing or electron withdrawing) is the strongest among the three isomers due to ortho effect. Which of the following is the weakest acid?