A 25.0-mL sample of 0.150 M hydrazoic acid is titrated with a 0.150 M NaOH solution. What is the pH after 13.3 mL of base is added? The Ka of hydrazoic acid is 1.9 x 105. 3.03 4.66 4.78 1.34 4.45

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Chapter1: Chemical Foundations
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**Question:**

A 25.0-mL sample of 0.150 M hydrazoic acid is titrated with a 0.150 M NaOH solution. What is the pH after 13.3 mL of base is added? The \( K_a \) of hydrazoic acid is \( 1.9 \times 10^{-5} \).

**Options:**

- ○ 3.03
- ○ 4.66
- ○ 4.78
- ○ 1.34
- ○ 4.45
Transcribed Image Text:**Question:** A 25.0-mL sample of 0.150 M hydrazoic acid is titrated with a 0.150 M NaOH solution. What is the pH after 13.3 mL of base is added? The \( K_a \) of hydrazoic acid is \( 1.9 \times 10^{-5} \). **Options:** - ○ 3.03 - ○ 4.66 - ○ 4.78 - ○ 1.34 - ○ 4.45
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