/*! 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} Q22P 聽Calculate the fraction of asso... [FREE SOLUTION] | 91影视

91影视

Log out

Learning Materials

Features

Discover

Chapter 9: Q22P (page 209)

Calculate the fraction of association (伪) for 1.00 脳 10-1, 1.00 脳10-2, and 1.00 脳10-12 M sodium acetate. Does 伪 increase or decrease with dilution?

Short Answer

Expert verified

The fraction of dissociation, a=0.0076%,0.024%,and0.57%.

Step by step solution

01

Definition of association.

It is defined as the aggregation of atoms or molecules into larger units.

02

Step: Consider a reaction.

CH3CO2-+H2O鈬�CH3CO2H+OH-[CH3CO2-]=F-x[CH3CO2H]=[OH-]=x

03

Calculating value of Kb .

We will use this equation for following:

Kb=x2F-xF=10-1x=7.6脳10-6F=10-2x=2.4脳10-6F=10-12,

We can see that dilution is so high that pH=7we can use the following:

localid="1654945563356" HA=KbA-OH-=5.7脳10-3A-

04

Calculate fraction of dissociation.

a=HAHA+A-=5.7脳10-3A-5.7脳10-3A-+A-a=0.57%

Now, we can conclude that more the dilution of solution greater the fraction of dissociation.

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

Consider a reaction mixture containing 100.0mLof 0.100mLborate buffer at pH=pK3= 9.24 . At pH=pKa , we know that [H3BO3]=[H2BO3]=0.0500M . Suppose that a chemical reaction whose pHwe wish to control will be generating acid. To avoid changing the pH very much we do not want to generate more acid than would use up half of the[H2BO3] .How many moles of acid could be generated without using up more than half of the[H2BO3] ?What would bepH?

If, instead, mmol of strong base were generated, by how much would the pH of the original buffer rise?

Does the pH change in the right direction when HCl is added?

Covalent compounds generally have higher vapor pressure than ionic compounds. The 鈥渇ishy鈥� smell of fish arises from amines in the fish. Explain why squeezing lemon (which is acidic) onto fish reduces the fishy smell (and taste).

(a) Calculate the pH of a solution prepared by mixing 0.00100molof the baseB(Kb=10-2.00)with 0.0200mol of BH+Br-and diluting to 1.00L.First calculate the pH by assuming[B]=0.0100and [BH+]=0.0200M . Compare this answer with the pH calculated without making such an assumption.

(b) After working part (a) by hand, use Excel Goal Seck to find the same answers.
See all solutions

Recommended explanations on Chemistry Textbooks

Physical Chemistry

Read Explanation

The Earths Atmosphere

Read Explanation

Ionic and Molecular Compounds

Read Explanation

Organic Chemistry

Read Explanation

Kinetics

Read Explanation

Nuclear Chemistry

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.