**Titration of Nitrous Acid (HNO₂) with KOH Solution**A chemist titrates 160.0 mL of a 0.3272 M nitrous acid (HNO₂) solution with a 0.3027 M KOH solution at 25 °C. Calculate the pH at equivalence. The $ pK_a $ of nitrous acid is 3.35.Round your answer to 2 decimal places.**Note for advanced students**: you may assume the total volume of the solution equals the initial volume plus the volume of KOH solution added.**pH Calculation Input Box**- pH = [ ]- Buttons: [ X ] [ ↻ ] Use this exercise to integrate your understanding of acid-base reactions and titration calculations.

Answered: A chemist titrates 160.0 mL of a…

Chemistry

10th Edition

ISBN:9781305957404

Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Chapter1: Chemical Foundations

Section: Chapter Questions

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**Titration of Nitrous Acid (HNO₂) with KOH Solution**

A chemist titrates 160.0 mL of a 0.3272 M nitrous acid (HNO₂) solution with a 0.3027 M KOH solution at 25 °C. Calculate the pH at equivalence. The $ pK_a $ of nitrous acid is 3.35.

Round your answer to 2 decimal places.

**Note for advanced students**: you may assume the total volume of the solution equals the initial volume plus the volume of KOH solution added.

**pH Calculation Input Box**
- pH = [ ]
- Buttons: [ X ] [ ↻ ]

Use this exercise to integrate your understanding of acid-base reactions and titration calculations.

Expert Solution

Step 1: Question related information

In this chemistry problem, we are tasked with calculating the pH at the equivalence point of a titration between nitrous acid (HNO₂) and potassium hydroxide (KOH). The titration involves 160.0 mL of a 0.3272M nitrous acid solution and a 0.3027M solution of KOH at 25 $degree$ C. The pK_a of nitrous acid, which is an important parameter for weak acid dissociation, is provided as 3.35

At the equivalence point of the titration, all the nitrous acid has reacted with the potassium hydroxide, resulting in a solution containing only potassium nitrite (KNO₂) and water.

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