earch 55.0 mL of 0.30 M HF (K₂ = 7.2 x 10-4)is titrated with 5.0 mL of 0.55 M NaOH. Calculate the pH at this point in the titration. Your Answer: Answer S W ? 74°F ^ 9:33 PM $1.0003

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Chapter1: Chemical Foundations
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### Titration Problem

**Problem Statement:**

55.0 mL of 0.30 M HF (Ka = 7.2 x 10^-4) is titrated with 5.0 mL of 0.55 M NaOH. Calculate the pH at this point in the titration.

---

**Solution Approach:**

1. **Molarity and Volume:** 
   - Calculate initial moles of HF.
   - Calculate moles of NaOH added.
   
2. **Reaction:**
   - Write the balanced equation for the reaction between HF and NaOH.
   - Determine moles of HF remaining or moles of F⁻ produced if HF is partly neutralized.
   
3. **Equilibrium:**
   - Use the Ka expression to find [H⁺] from remaining [HF] and [F⁻].
   
4. **pH Calculation:**
   - Calculate the pH using the concentration of [H⁺].

Note: Detailed calculations would involve equilibrium calculations based on the reaction and the dissociation constant (Ka).

**Diagram Explanation:**

In this section, if there was a diagram, we would provide a detailed explanation of any titration curves or other diagrams related to this chemical reaction. However, the image provided contains only the text; hence, no diagram is explained.
Transcribed Image Text:### Titration Problem **Problem Statement:** 55.0 mL of 0.30 M HF (Ka = 7.2 x 10^-4) is titrated with 5.0 mL of 0.55 M NaOH. Calculate the pH at this point in the titration. --- **Solution Approach:** 1. **Molarity and Volume:** - Calculate initial moles of HF. - Calculate moles of NaOH added. 2. **Reaction:** - Write the balanced equation for the reaction between HF and NaOH. - Determine moles of HF remaining or moles of F⁻ produced if HF is partly neutralized. 3. **Equilibrium:** - Use the Ka expression to find [H⁺] from remaining [HF] and [F⁻]. 4. **pH Calculation:** - Calculate the pH using the concentration of [H⁺]. Note: Detailed calculations would involve equilibrium calculations based on the reaction and the dissociation constant (Ka). **Diagram Explanation:** In this section, if there was a diagram, we would provide a detailed explanation of any titration curves or other diagrams related to this chemical reaction. However, the image provided contains only the text; hence, no diagram is explained.
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