Give (a) conjugate acid (b) conjugate base of `HO(CH_(2))_(3)NH_(2)`

Options

A. `H_2overset(+)O(CH_2)_3NH_2`
B. `HO(CH_2)_3overset(+)NH_3`
C. `overset(-)O(CH_2)_3NH_2`
D. `HO(CH_2)_3N^(-)H`

Answer

To determine the conjugate acid and conjugate base of the compound \( HO(CH_2)_3NH_2 \), we will follow these steps:

### Step 1: Identify the structure of the compound
The compound \( HO(CH_2)_3NH_2 \) consists of a hydroxyl group (-OH) and an amine group (-NH2). The structure can be drawn as follows:

```
OH
|
H2N-CH2-CH2-CH2
```
### Step 2: Define conjugate acid and conjugate base
- **Conjugate Acid**: A conjugate acid is formed when a base accepts a proton (H⁺ ion).
- **Conjugate Base**: A conjugate base is formed when an acid donates a proton (H⁺ ion).

### Step 3: Determine the conjugate acid
To find the conjugate acid of the given compound, we can assume that it accepts a proton (H⁺).

- The amine group (-NH2) can accept a proton to become -NH3⁺.
- Thus, the conjugate acid will be:
\[ HO(CH_2)_3NH_3^+ \]

### Step 4: Determine the conjugate base
To find the conjugate base of the given compound, we can assume that it donates a proton (H⁺).

- The hydroxyl group (-OH) can lose a proton, resulting in a negatively charged species.
- Thus, the conjugate base will be:
\[ O^-(CH_2)_3NH_2 \]

### Final Answers:
(a) Conjugate Acid: \( HO(CH_2)_3NH_3^+ \)
(b) Conjugate Base: \( O^-(CH_2)_3NH_2 \)

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