Given the following information: formic acid НСООН K = 1.8x10+ hypochlorous acid HCIO K = 3.5x108 (1) Write the net ionic equation for the reaction that occurs when equal volumes of 0.310 M aqueous formic acid and sodium hypochlorite are mixed. It is not necessary to include states such as (aq) or (s). Use HCO0 as the formula for the formate ion. НСООН + NaCIO ClO + HCOOH (2) At equilibrium the products v will be favored. (3) The pH of the resulting solution will be less than seven.

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Chapter1: Chemical Foundations
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## Acids and Equilibrium Reactions

### Given Information:
- **Formic acid (HCOOH)**
  - \( K_a = 1.8 \times 10^{-4} \)
- **Hypochlorous acid (HClO)**
  - \( K_a = 3.5 \times 10^{-8} \)

### Problem Statement:
1. **Net Ionic Equation:**
   Write the net ionic equation for the reaction when equal volumes of 0.310 M aqueous formic acid and sodium hypochlorite are mixed. Do not include states such as (aq) or (s). Use \( \text{HCOO}^- \) as the formula for the formate ion.

   **Equation:**
   \[
   \text{HCOOH} + \text{NaClO} \rightarrow \text{ClO}^- + \text{HCOOH}
   \]

2. **Equilibrium:**
   At equilibrium, the ______ will be favored.
   - **Option Selected:** Products

3. **pH of the Solution:**
   The pH of the resulting solution will be ______ seven.
   - **Option Selected:** Less than

### Explanation:
In this reaction, formic acid reacts with sodium hypochlorite, resulting in a system where the products are favored at equilibrium. The lower \( K_a \) value of hypochlorous acid indicates it is a weaker acid compared to formic acid, which influences the direction of the equilibrium. As a result, the pH of the solution is expected to be less than seven, indicating an acidic environment.
Transcribed Image Text:## Acids and Equilibrium Reactions ### Given Information: - **Formic acid (HCOOH)** - \( K_a = 1.8 \times 10^{-4} \) - **Hypochlorous acid (HClO)** - \( K_a = 3.5 \times 10^{-8} \) ### Problem Statement: 1. **Net Ionic Equation:** Write the net ionic equation for the reaction when equal volumes of 0.310 M aqueous formic acid and sodium hypochlorite are mixed. Do not include states such as (aq) or (s). Use \( \text{HCOO}^- \) as the formula for the formate ion. **Equation:** \[ \text{HCOOH} + \text{NaClO} \rightarrow \text{ClO}^- + \text{HCOOH} \] 2. **Equilibrium:** At equilibrium, the ______ will be favored. - **Option Selected:** Products 3. **pH of the Solution:** The pH of the resulting solution will be ______ seven. - **Option Selected:** Less than ### Explanation: In this reaction, formic acid reacts with sodium hypochlorite, resulting in a system where the products are favored at equilibrium. The lower \( K_a \) value of hypochlorous acid indicates it is a weaker acid compared to formic acid, which influences the direction of the equilibrium. As a result, the pH of the solution is expected to be less than seven, indicating an acidic environment.
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