/*! This file is auto-generated */ .wp-block-button__link{color:#fff;background-color:#32373c;border-radius:9999px;box-shadow:none;text-decoration:none;padding:calc(.667em + 2px) calc(1.333em + 2px);font-size:1.125em}.wp-block-file__button{background:#32373c;color:#fff;text-decoration:none} Q67P c Question:聽Effect of concentrati... [FREE SOLUTION] | 91影视

91影视

Log out

Learning Materials

Features

Discover

Chapter 11: Q67P c (page 263)

Question:Effect of concentration in the titration of weak acid with strong base.Use your spreadsheet from Problem 11-66 to prepare a family of titration curves for pKa = 6, with the following combinations of concentrations: (a) Ca = 20 mM, Cb = 100 mM; (b) Ca = 2 mM, Cb = 10 mM; (c) Ca = 0.2 mM, Cb = 1 mM.

Short Answer

Expert verified

The plot of the family of titration curves for pKa =6 is shown below

(c)

Step by step solution

01

Equation need to be used to develop spreadsheet

The equation for the fraction of titration of weak acid with strong base

蠒=CbVbCaVa=伪A--1-H+-OH-Ca1+H+-OH-Cb

Consider the titration of a weak acid HA (volume=Va, initial concentration=Ca) with a strong base NaOH (volume=Vb, initial concentration=Cb).

With reference to SID-135385-11-67P 鈥� a the following graph was obtained for Ca = 20 mM, Cb = 100 mM

With reference to SID-135385-11-67P 鈥� b the following graph was obtained for Ca = 20 mM, Cb = 100 mM

02

Development of the spreadsheet for Ca = 0.2 mM, Cb = 1 mM

Spreadsheet for Ca = 0.2 mM, Cb = 1 mM

03

Plot for part (c)

From the above table titration curves obtained is plotted below

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.

Over 30 million students worldwide already upgrade their learning with 91影视!

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

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.

A solution was prepared from 1.023 g of the primary standard tris (Table 11-4) plus 99.367 g of water; 4.963 g of the solution were titrated with 5.262 g of aqueousHNO3to reach the methyl red endpoint. Calculate the concentration of the HNO3(expressed as mol HNO3/kg solution)

(a) Uncertainty in formula mass. In an extremely-high precision gravimetric titration, the uncertainty in the formula mass of the primary standard could contribute to the uncertainty of the result. Read about uncertainty in molecular mass in Appendix B. Express the formula mass of potassium hydrogen phthalate, C8H5O4Kwith its 95% confidence interval based on a rectangular distribution of uncertainty of atomic mass with a coverage factor of k 5 2.

(b) Systematic uncertainty in reagent purity. The manufacturer of potassium hydrogen phthalate states that the purity is 1.000 00 60.000 05. In the absence of further information, we assume that the distribution of uncertainty is rectangular. What standard uncertainty would you use for the purity of this reagent

Using a setup similar to Equation 11-1, calculate [OH-] when 6.00 mL of HBr have been added. Check your pH against the value in Table 11-1

Calculate the pH at each point listed for the titration of 100.0 mL of 0.100 M cocaine (Section 9-4,Kb=2.6脳10-6 ) with 0.200 M . The points to calculate areVa= 0.0, 10.0, 20.0, 25.0, 30.0, 40.0, 49.0, 49.9, 50.0, 50.1, 51.0, and 60.0 mL. Draw a graph of pH versus Va.
See all solutions

Recommended explanations on Chemistry Textbooks

Physical Chemistry

Read Explanation

Inorganic Chemistry

Read Explanation

Kinetics

Read Explanation

Chemical Analysis

Read Explanation

The Earths Atmosphere

Read Explanation

Ionic and Molecular Compounds

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.