Carboxylic Acids: Physical Properties Quiz

What happens to the boiling point of carboxylic acids as the number of carbon atoms increases?

• It increases.

• It remains the same.

• It decreases.

• It fluctuates randomly.

Why do carboxylic acids generally have higher boiling points than alcohols with the same number of carbon atoms?

• Carboxylic acids have more electrons.

• Carboxylic acids have fewer electrons.

• Alcohols have more electrons.

• Alcohols have stronger intermolecular forces.

Which of the following homologous series is generally insoluble in water?

• All of the above

• Alkanes

• Small alcohols

• Small carboxylic acids

What is the solubility characteristic of small carboxylic acids in water?

• They are soluble only in hot water.

• They are soluble.

• They are insoluble.

• They are partially soluble.

What role does the OH group play in the solubility of carboxylic acids?

• It reduces solubility.

• It has no effect.

• It makes them insoluble.

• It enhances solubility.

How does the length of the carbon chain affect the solubility of carboxylic acids?

• Chain length has no effect.

• Longer chains decrease solubility.

• Shorter chains decrease solubility.

• Longer chains increase solubility.

What happens to the solubility of carboxylic acids as the hydrocarbon tail lengthens?

• Solubility remains constant.

• Solubility decreases.

• Solubility increases.

• Solubility fluctuates.

Why do larger carboxylic acid molecules have lower solubility in water?

• They have more OH groups.

• Their hydrocarbon tails disrupt water molecules.

• They form stronger hydrogen bonds.

• They have fewer carbon atoms.

Which part of the carboxylic acid molecule is primarily responsible for its solubility in water?

• The OH group

• The hydrogen atoms

• The entire molecule

• The carbon chain

What is the effect of a longer hydrocarbon tail on the hydrogen bonds in water?

• It has no effect.

• It breaks them.

• It strengthens them.

• It creates new bonds.