Amine behaves as

Options

A. neutral compound
B. protophilic acid
C. Lewis acid
D. Lewis base

Answer

To determine how amines behave, we need to analyze their structure and properties. Let's break it down step by step.

### Step 1: Identify the Structure of Amines
Amines are organic compounds that contain a nitrogen atom bonded to one or more alkyl or aryl groups. The simplest amine is RNH2, where R represents an alkyl group.

**Hint:** Remember that the basic structure of amines includes a nitrogen atom bonded to hydrogen and/or carbon atoms.

### Step 2: Examine the Nitrogen Atom
The nitrogen atom in amines has a lone pair of electrons. This lone pair is crucial for understanding the behavior of amines.

**Hint:** Focus on the lone pair of electrons on the nitrogen atom; it plays a key role in the reactivity of amines.

### Step 3: Determine the Behavior of Amines
Amines can donate their lone pair of electrons to accept protons (H+ ions). This ability to donate electrons makes amines behave as bases according to the Brønsted-Lowry theory.

**Hint:** Consider how the donation of electrons relates to the definition of acids and bases.

### Step 4: Classify Amines as Lewis Bases
In the context of Lewis theory, a Lewis base is defined as a substance that can donate a pair of electrons. Since amines can donate their lone pair, they are classified as Lewis bases.

**Hint:** Recall the definition of Lewis acids and bases; it will help you understand the classification of amines.

### Conclusion
Based on the analysis, amines behave as bases due to their ability to donate a lone pair of electrons. Therefore, the correct answer is that amines behave like Lewis bases.

**Final Answer:** Amines behave as Lewis bases.