Carboxylic Acids Reactions

Which is the correct IUPAC name of the following compound?

• A. 2-hydroxybutanoic acid

• B. 3-hydroxybutanoic acid

• C. 2-hydroxypropanoic acid

• D. 1-carboxypropan-2-ol

Which of the following is TRUE about the acidity of ethanoic acid?

• Ethanoic acid is more acidic than propanoic acid

• Ethanoic acid is more acidic than nitroethanoic acid

• Ethanoic acid is more than chloroethanoic acid

• Ethanoic acid is more acidic than fluoroethanoic acid

Why does the presence of an electron withdrawing group increase the acidity of carboxylic acid?

• It increases the polarity of the O-H bond

• It increases the stability of conjugate base

• All of the above

Which of the following statement about phenol and ethanoic acid is correct?

• Phenol is a stronger acid because oxygen is more electronegative than carbon.

• Phenol is a stronger acid because there is delocalisation of negative charge on O atom in phenoxide but not ethanoate.

• Ethanoic acid is a stronger acid because oxygen is more electronegative than carbon.

• Ethanoic acid is a stronger acid because there is delocalisation of negative charge on O atom in phenoxide but not ethanoate.

Tags

NGSS.HS-PS1-2

What are the products formed when chloroethane is heated with 1) NaCN, and then 2) dilute HCl?

• ethanenitrile; propanoic acid

• ethanamine, ethanamide

• ethanenitrile, ethanoic acid

• ethanamine, propanamide

Which of the following DOES NOT give ethanoyl chloride when reacting with ethanoic acid?

• SOCl₂

• PCl₅

• Cl₂

• HCl

Which compound reacts with ethanoic acid to produce methylethanoate (with H₂SO₄ catalyst)?

• methanol

• methanal

• ethanol

• propanone

Which pair of compounds react to give an amide?

• ethanoyl chloride and ammonia

• ethanoic acid and ammonia

• ethanoyl chloride and ethylamine

• ethanoyl chloride and ethanenitrile

Which pair of compounds DO NOT react to produce an ester?

• ethanoyl chloride and phenol

• ethanoic acid and phenol

• ethanoyl chloride and ethanol

• ethanoic acid and ethanol

Which of the following are needed to hydrolyse ethanoyl chloride into ethanoic acid and HCl?

• Addition of NaOH as a catalyst

• Addition of H₂SO₄ as a catalyst

• Heating under reflux

• Addition of water only

Tags

NGSS.HS-PS1-5