Lower aliphatic amines are known for their ___ odor and tend to exist in the ___ state.

Fishy; gaseous

True or False: Tertiary amines can form hydrogen bonds with water due to the presence of free hydrogen atoms.

False; Tertiary amines lack free hydrogen atoms, preventing hydrogen bonding with water.

As the size of the hydrophobic alkyl groups in amines increases, solubility in water tends to ___ .

Decrease

Which type of amine has the highest boiling point: primary, secondary, or tertiary?

Primary amines

Fill in the blank: The boiling order of amines is ___ > ___ > ___.

Primary amines; secondary amines; tertiary amine

What happens to aryl amines when exposed to atmospheric oxidation?

They acquire color due to oxidation.

True or False: Primary amines have a greater degree of intermolecular hydrogen bonding than secondary amines.

True; Primary amines have two hydrogen atoms available for bonding.

Identify the reason why organic solvents like benzene can dissolve amines.

Amines dissolve in benzene because both are nonpolar or weakly polar, allowing them to interact through Van der Waals forces and weak hydrogen bonding.

Amines are more basic than ___ due to their ability to form hydroxide ions in aqueous solution.

Ammonia

What product is formed when ethylamine reacts with hydrochloric acid?

Ethyl ammonium chloride

True or False: The aqueous solution of ethylamine behaves like ammonium chloride.

False; it behaves like ammonium hydroxide.

In the carbylamine reaction, what foul-smelling substance is produced when primary amines react with chloroform and ethanolic potassium hydroxide?

Isocyanides

Fill in the blank: Ethylamine reacts with alkyl halides to form ___, ___, and ___ amines.

Secondary, tertiary, and quaternary

What is the significance of the double salts formed by ethyl ammonium hydrochloride with PtCl₄ and AuCl₃?

They decompose on heating to pure metal, which can be used to determine the molecular mass of amines.

What happens to iron, chromium, and aluminum when treated with an aqueous solution of ethylamine?

They precipitate as hydroxides.

What type of reaction occurs when ethylamine is mixed with acetyl chloride or acetic anhydride?

Acetylation

True or False: The reaction between ethylamine and alkyl halides can only produce secondary amines.

False; it can produce secondary, tertiary amines, and quaternary ammonium salts.

What is the purpose of the Isocyanide Test in organic chemistry?

The Isocyanide Test is used for the detection of primary amines, as secondary and tertiary amines do not show this reaction.

Hydrogen is evolved when ethylamine is heated with ___ to form a sodium derivative.

Sodium

Ethylamine reacts with Grignard's reagent to produce ___.

Alkanes

True or False: Secondary amines react in the same way as primary amines in the Isocyanide Test.

False; secondary amines do not show this reaction.

What does the Hofmann's Mustard Oil Reaction produce when carbon disulphide reacts with ethylamine in the presence of HgCl2?

Ethyl isothiocyanate, which has a mustard oil-like smell.