**Problem Statement:**Calculate the pH of a solution formed by mixing 100.0 mL of 0.100 M NaF and 100.0 mL of 0.040 M HCl. The Ka of HF = \(7.24 \times 10^{-4}\).**Options:**- A. 2.74- B. 3.14- C. 3.54- D. 3.32- E. 2.96**Explanation:**The problem requires finding the pH of a solution when sodium fluoride (NaF) is mixed with hydrochloric acid (HCl). Given the Ka (acid dissociation constant) for HF, the solution involves equilibria considering the fluoride ion as a weak base and the common ion effect.

pH = pKa + log [salt]/[acid] pKa = -log Ka Number of mmols = Molarity x volume (mL)

Answered: Calculate the pH of a solution formed…

Calculate the pH of a solution formed by mixing 100.0 mL of 0.100 M NaF and 100.0 mL of 0.040 M HCI. Ka of HF = 7.24 x 104 O A. 2.74 O B. 3.14 OC. 3.54 O D. 3.32 O E. 2.96

Chemistry

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Chapter1: Chemical Foundations

Section: Chapter Questions

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Question

**Problem Statement:**

Calculate the pH of a solution formed by mixing 100.0 mL of 0.100 M NaF and 100.0 mL of 0.040 M HCl. The Ka of HF = \(7.24 \times 10^{-4}\).

**Options:**

- A. 2.74
- B. 3.14
- C. 3.54
- D. 3.32
- E. 2.96

**Explanation:**
The problem requires finding the pH of a solution when sodium fluoride (NaF) is mixed with hydrochloric acid (HCl). Given the Ka (acid dissociation constant) for HF, the solution involves equilibria considering the fluoride ion as a weak base and the common ion effect.

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