Which organic acid has no carbolic base ?

Which organic acid has no carbolic base ?
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1 Answer

Answer :

: Carbolic acid ( C6H5OH) does not contain carbolic radical (- COOH) .
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What is the chemical name of carbolic acid ?

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. The reduction of cyclohexanone with LiAlH4 (or NaBH4) will give (a) an alcohol (b) an organic acid (c) an aldehyde(d) a hemiketal

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The process of dissolving an acid or a base in water is a highly - (1) Exothermic reaction (2) Endothermic reaction (3) Sublimation reaction (4) Redux reaction

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Phenol is (a) stronger acid than acetic acid (b) weaker acid than acetic acid (c) stronger base than methylamine (d) weaker base than methylamine

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Aniline undergoes oxidation with Na2Cr2O7/H2SO4 to give (a) Schiff's base (b) p-Benzoquinone (c) Phenol (d) Benzoic acid

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Last Answer : p-Benzoquinone

Which of the following statements is false about aniline? (a) It is a primary aromatic amine. (b) It is a weak base which forms salts with acids. (c) It liberates nitrogen on treatment with ice-cold nitrous acid. (d) It can be prepared by the reduction of nitrobenzene with tin and HCl

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What purpose does FeCl3 serve in the electrophilic aromatic substitution reaction between chlorine and benzene? (a) It serves as a radical initiator to produce the chlorine radical needed to propagate the chain reaction. (b) It functions by destabilizing the carbocationic intermediate and thereby increases the rate of H+ loss. (c) It serves as a Lewis base catalyst by reacting with Cl2 to generate chloride ions. (d) It serves as a Lewis acid catalyst by reacting with the Cl2 and thereby activates it toward attack by benzene’s π electrons.

Description : What purpose does FeCl3 serve in the electrophilic aromatic substitution reaction between chlorine and benzene? (a) It serves as a radical initiator to produce the chlorine radical needed to propagate the ... by reacting with the Cl2 and thereby activates it toward attack by benzene's π electrons.

Last Answer : It serves as a Lewis acid catalyst by reacting with the Cl2 and thereby activates it toward attack by benzene’s π electrons.

A zwitterion is (a) an ion that is positively charged in solution (b) an ion that is negatively charged in solution (c) a compound that can ionize both as a base and an acid. (d) a carbohydrate with an electrical charge.

Description : A zwitterion is (a) an ion that is positively charged in solution (b) an ion that is negatively charged in solution (c) a compound that can ionize both as a base and an acid. (d) a carbohydrate with an electrical charge.

Last Answer : a compound that can ionize both as a base and an acid

Hydrolysis of an ester can be accomplished by(a) base-promoted hydrolysis(b) acid-catalyzed hydrolysis(c) both of the above(d) neither of the above

Description : Hydrolysis of an ester can be accomplished by (a) base-promoted hydrolysis (b) acid-catalyzed hydrolysis (c) both of the above (d) neither of the above

Last Answer : both of the above

Which of the following statements describes the first step in the mechanism of the aldol condensation? (a) An alpha hydrogen is abstracted by the base to form an enolate anion. (b) A nucleophilic base attacks the carbonyl carbon atom. (c) The carbonyl oxygen is protonated by the base ion. (d) The alpha hydrogen is abstracted by an acid to the enolate anion.

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Last Answer : An alpha hydrogen is abstracted by the base to form an enolate anion

The stronger the acid __________. (a) the less stable its conjugate base (b) the larger the pKa (c) the weaker its conjugate base (d) the larger the pH

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Last Answer : the weaker its conjugate base

Which of the following statements is correct? (a) The stronger the acid, the weaker its conjugate base. (b) The stronger the acid, the stronger its conjugate base. (c) The stronger the base, the stronger its conjugate base. (d) The stronger the acid, the weaker its conjugate acid.

Description : Which of the following statements is correct? (a) The stronger the acid, the weaker its conjugate base. (b) The stronger the acid, the stronger its conjugate base. (c) The stronger the base, the stronger its conjugate base. (d) The stronger the acid, the weaker its conjugate acid.

Last Answer : The stronger the acid, the weaker its conjugate base

Which statement is correct about acid-base chemistry? (a) the larger the Ka, the stronger the acid (b) a small pKa correspond to a large Ka (c) the smaller the pKa, the stronger the acid (d) all of the above

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Last Answer : all of the above

Which is defined as a species that accepts a proton? (a) Lewis acid (b) Lewis base (c) Bronsted-Lowry acid (d) Bronsted-Lowry base

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Last Answer : Bronsted-Lowry base

A nucleophile acts as a __________ when it reacts with an electrophile. (a) Bronsted-Lowry acid (b) Arrhenius base (c) Lewis acid (d) Lewis base

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Last Answer : Lewis base

An electrophile acts as a __________ when it reacts with a nucleophile. (a) Bronsted-Lowry base (b) Arrhenius base (c) Lewis acid(d) Lewis base

Description : An electrophile acts as a __________ when it reacts with a nucleophile. (a) Bronsted-Lowry base (b) Arrhenius base (c) Lewis acid (d) Lewis base

Last Answer : Lewis acid

What is the value of heat of neutralization when strong acid and base react?

Description : What is the value of heat of neutralization when strong acid and base react?

Last Answer : Ans: The heat of neutralization is -57.32 kJ, when strong acid and base react.

How degree of ionization effects the strength of an acid or base according to Arrhenius concept?

Description : How degree of ionization effects the strength of an acid or base according to Arrhenius concept?

Last Answer : Ans: An acid or base which will ionize completely, having high degree of ionization, will give more H+ or –OH ions. And will be a strong acid or base.

_______ Lewis Acid - Base Complexation Chemistry includes all the common mineral acids. (a) Type – 1 (b) Type – 2 (c) Type – 3 (d) Type – 4

Description : _______ Lewis Acid - Base Complexation Chemistry includes all the common mineral acids. (a) Type – 1 (b) Type – 2 (c) Type – 3 (d) Type – 4

Last Answer : (c) Type – 3

Buffer solutions have constant acidity and alkalinity because: (1) they have fixed value of pH (2) these give unionised acid or base on reaction with added acid or alkali (3) acids and alkalies in these solutions are shielded from attack by other ions (4) they have large excess of H+ or OH– ions

Description : Buffer solutions have constant acidity and alkalinity because: (1) they have fixed value of pH (2) these give unionised acid or base on reaction with added acid or alkali (3) acids and alkalies in these solutions are shielded from attack by other ions (4) they have large excess of H+ or OH– ions

Last Answer : these give unionised acid or base on reaction with added acid or alkali

If a material has the capacity to behave either as an acid or a base it is said to be: w) amorphous x) amphoteric y) anhydrous z) aklaline

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Last Answer : ANSWER: X -- AMPHOTERIC