A buffer is prepared by dissolving a base, HONH2, and its conjugate acid, HONH3NO3, in some water. Write equations to show how this buffer neutralizes any added acid or base.

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### Buffer Preparation and Neutralization Mechanism

**Task:**
A buffer is prepared by dissolving a base, HONH₂, and its conjugate acid, HONH₃NO₃, in some water. Write equations to show how this buffer neutralizes any added acid or base.

**Explanation:**

1. **Introduction to Buffers:**
   Buffers are solutions that resist changes in pH upon the addition of small amounts of acids or bases. They typically consist of a weak acid and its conjugate base, or a weak base and its conjugate acid.

2. **Components:**
   - **Base:** Hydroxylamine (HONH₂)
   - **Conjugate Acid:** Hydroxylammonium nitrate (HONH₃NO₃)

3. **Buffer Solution Preparation:**
   When hydroxylamine (HONH₂) dissolves in water, it partially ionizes:
   \[
   HONH₂ + H₂O ⇌ HONH₃^+ + OH^-
   \]
   Hydroxylammonium nitrate (HONH₃NO₃) dissociates as follows:
   \[
   HONH₃NO₃ ⇌ HONH₃^+ + NO₃^-
   \]

4. **Neutralization of Added Acid:**
   When an acid, such as HCl, is added to the buffer solution, the conjuguate base (HONH₂) will react with the added H⁺ ions:
   \[
   HONH₂ + H⁺ ⇌ HONH₃^+
   \]
   This reaction removes the excess H⁺ ions, minimizing the change in pH.

5. **Neutralization of Added Base:**
   When a base, such as NaOH, is added, the conjugate acid (HONH₃^+) will react with the added OH⁻ ions:
   \[
   HONH₃^+ + OH⁻ ⇌ HONH₂ + H₂O
   \]
   This reaction neutralizes the excess OH⁻ ions, again minimizing the change in pH.

By these mechanisms, the buffer solution prepared using HONH₂ and HONH₃NO₃ successfully maintains a stable pH when either an acid or base is introduced into the system.
Transcribed Image Text:### Buffer Preparation and Neutralization Mechanism **Task:** A buffer is prepared by dissolving a base, HONH₂, and its conjugate acid, HONH₃NO₃, in some water. Write equations to show how this buffer neutralizes any added acid or base. **Explanation:** 1. **Introduction to Buffers:** Buffers are solutions that resist changes in pH upon the addition of small amounts of acids or bases. They typically consist of a weak acid and its conjugate base, or a weak base and its conjugate acid. 2. **Components:** - **Base:** Hydroxylamine (HONH₂) - **Conjugate Acid:** Hydroxylammonium nitrate (HONH₃NO₃) 3. **Buffer Solution Preparation:** When hydroxylamine (HONH₂) dissolves in water, it partially ionizes: \[ HONH₂ + H₂O ⇌ HONH₃^+ + OH^- \] Hydroxylammonium nitrate (HONH₃NO₃) dissociates as follows: \[ HONH₃NO₃ ⇌ HONH₃^+ + NO₃^- \] 4. **Neutralization of Added Acid:** When an acid, such as HCl, is added to the buffer solution, the conjuguate base (HONH₂) will react with the added H⁺ ions: \[ HONH₂ + H⁺ ⇌ HONH₃^+ \] This reaction removes the excess H⁺ ions, minimizing the change in pH. 5. **Neutralization of Added Base:** When a base, such as NaOH, is added, the conjugate acid (HONH₃^+) will react with the added OH⁻ ions: \[ HONH₃^+ + OH⁻ ⇌ HONH₂ + H₂O \] This reaction neutralizes the excess OH⁻ ions, again minimizing the change in pH. By these mechanisms, the buffer solution prepared using HONH₂ and HONH₃NO₃ successfully maintains a stable pH when either an acid or base is introduced into the system.
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