Log out Go to App
Go to App

Learning Materials

Features

Discover

Chapter 2: 37P (page 139)

Rank the following species in order of increasing acidity. Explain your reasons for ordering them as you do.

Short Answer

Expert verified

Ka is known as the acid dissociation constant and its value indicates the relative strength of the acid. is defined as the negative logarithm (base ) of . Mathematically, . value of strong acids is usually zero or even negative while the value of weaker acids are greater than .

Step by step solution

01

Ka and pKa

Ka is known as the acid dissociation constant and its value indicates the relative strength of the acid. is defined as the negative logarithm (base ) of . Mathematically, . value of strong acids is usually zero or even negative while the value of weaker acids are greater than .

02

Species in order of increasing acidity

The strength of an acid or base is given by itsvalue. The smallervalue means stronger is the acid while the largervalue means stronger is the base.

pKa  of   HF  =  3.87pKa  of   HCN  =  9.23pKa  of   NH3  =  36pKa  of   H2SO4  =  -2.8pKa  of   HCOOH  =  3.76pKa  of   CH4  =  50pKa  of   H2O  =  15.7

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

The N-F bond is more polar than N-H bond, but NF3 has smaller dipole moment than NH3. Explain the curious result.

NH3: µ= 1.5 D, NF3: µ= 0.2D

Choose the more acidic member of each pair of isomers, and show why the acid you chose is more acidic.

(a)

Each of these compounds can react as a nucleophile. In each case, use curved arrows to show how the nucleophile would react with the strong electrophile, BF3.

(a)

(b)

(c)

(d)

(CH3)3H

(e)

CH3CH2OH

(f)

(CH3 )2S

Which of the following pure compounds can form hydrogen bonds? Which can form hydrogen bonds with water? Which ones do you expect to be soluble in water?

(a)

(b)

(c)

(d)

(e)

(f)

(g)

(h)

(i)

(j)

(k)

(l)

The C ≡ N triple bond in acetonitrile has a dipole moment of about 3.6Dand a bond length of about 1.16Å. Calculate the amount of charge separation in this bond. How important is the charge separated resonance form in the structure of acetonitrile?
See all solutions

Recommended explanations on Chemistry Textbooks

Ionic and Molecular Compounds

Read Explanation

Nuclear Chemistry

Read Explanation

Inorganic Chemistry

Read Explanation

Kinetics

Read Explanation

Physical Chemistry

Read Explanation

Making Measurements

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