Log out Go to App
Go to App

Learning Materials

Features

Discover

Chapter 11: Q1TY (page 240)

Find the pH when Va = 14.63 mL.

Short Answer

Expert verified

The pH is 4.73

Step by step solution

01

Information given

The following information was obtained from the example to solve this problem

Titration of pyridine using HCl

Amount of pyridine=25.00 mL of 0.08364M pyridine

Concentration of HCl=0.1067 M

Equivalence point occurs at 19.60 mL

pKa =5.20

Kb = 1.59×10-9

Ka=(Kw/Kb)=6.31×10-6

02

Reaction

The titration reaction is as follows

In the mixture of pyridine and pyridinium ion, a part of pyridine will be neutralized.

03

Calculation

The fraction of pyridine titrated is (14.63/19.60)=0.746

Therefore, the remaining fraction will be

1-0.746=0.254

The pH will be

pH=pKa+logBBH+=5.20+log0.2540.746=4.73

Therefore, the pH is 4.73

Unlock Step-by-Step Solutions & Ace Your Exams!

  • Full Textbook Solutions

    Get detailed explanations and key concepts

  • Unlimited Al creation

    Al flashcards, explanations, exams and more...

  • Ads-free access

    To over 500 millions flashcards

  • Money-back guarantee

    We refund you if you fail your exam.

Start your free trial

Over 30 million students worldwide already upgrade their learning with Vaia!

One App. One Place for Learning.

All the tools & learning materials you need for study success - in one app.

Get started for free

Most popular questions from this chapter

A weak acidHApKa=5.00was titrated with1.00MKOH. The acid solution had a volume of100.00mland100.00mlthe molarity of0,100M. Find the pH at the following volumes of base added and make a graph of pH versus Vb:Vb=0,1,5,9,9,9,10,10.1and 12ml .

Spectrophotometric properties of a particular indicator are given below:

A solution with a volume of 20.0 mL containing 1.40 ×10-5 M indicator plus 0.050 0 M benzene-1,2,3-tricarboxylic acid was treated with 20.0 mL of aqueous KOH. The resulting solution had an absorbance at 604 nm of 0.118 in a 1.00-cm cell. Calculate the molarity of the KOH solution.

Titration on Diprotic Systems

11-29 Find the pH of the solution when 0.0100M tyrosine is titrated to the equivalence point with0.00400MHCIO4.

Finding the End Point with a pH Electrode

11-34. Data for the titration of 100.00mLof a weak acid by Naohare given below. Find the end point by preparing a Gran plot, using the last 10%of the volume prior tove.

Verify the derivative in cell D7 of Figure 11-6.
See all solutions

Recommended explanations on Chemistry Textbooks

Making Measurements

Read Explanation

Nuclear Chemistry

Read Explanation

Ionic and Molecular Compounds

Read Explanation

Physical Chemistry

Read Explanation

Organic Chemistry

Read Explanation

Chemical Reactions

Read Explanation
View all explanations

What do you think about this solution?

We value your feedback to improve our textbook solutions.

Study anywhere. Anytime. Across all devices.

Sign-up for free