The most suitable solvent among pyridine and acetic acid has to be identified for titration of a weak base with H C l O 4 . Concept Introduction: Levelling effect is observed in case of solvation of acids or base in a solvent. Thus levelling effect is a phenomenon exhibited by solvents when an acid or base is dissolved in it. Water forms H 3 O + ion which is known as hydronium ion and it is formed when lone pair electron on the Oxygen atom is lost to bond with the proton. Hydronium ion is also behaves as acid as it is capable of losing the proton during the course of reaction. Any acid that is said to behave stronger acid than hydronium ion, when dissolved in water, forms hydronium ion with water that the strength of the acid is ‘levelled’ to that of the water. Similarly O H − ion is the strongest base in water. Any other base stronger than O H − ion when dissolved in water its strength is levelled to that of O H − ion.

Question

Want to see the full answer?

Answer 1

Question

Chapter 11, Problem 11.62P

(a)

Interpretation Introduction

Interpretation:

The most suitable solvent among pyridine and acetic acid has to be identified for titration of a weak base with HClO4.

Concept Introduction:

Levelling effect is observed in case of solvation of acids or base in a solvent. Thus levelling effect is a phenomenon exhibited by solvents when an acid or base is dissolved in it.

Water forms H3O+ ion which is known as hydronium ion and it is formed when lone pair electron on the Oxygen atom is lost to bond with the proton. Hydronium ion is also behaves as acid as it is capable of losing the proton during the course of reaction.

Any acid that is said to behave stronger acid than hydronium ion, when dissolved in water, forms hydronium ion with water that the strength of the acid is ‘levelled’ to that of the water.

Similarly OH− ion is the strongest base in water. Any other base stronger than OH− ion when dissolved in water its strength is levelled to that of OH− ion.

(b)

Interpretation Introduction

Interpretation:

The most suitable solvent among pyridine and acetic acid has to be identified for titration of a weak acid with tetrabutylammonium hydroxide.

Concept Introduction:

Levelling effect is observed in case of solvation of acids or base in a solvent. Thus levelling effect is a phenomenon exhibited by solvents when an acid or base is dissolved in it.

Water forms H3O+ ion which is known as hydronium ion and it is formed when lone pair electron on the Oxygen atom is lost to bond with the proton. Hydronium ion is also behaves as acid as it is capable of losing the proton during the course of reaction.

Any acid that is said to behave stronger acid than hydronium ion, when dissolved in water, forms hydronium ion with water that the strength of the acid is ‘levelled’ to that of the water.

Similarly OH− ion is the strongest base in water. Any other base stronger than OH− ion when dissolved in water its strength is levelled to that of OH− ion.

Expert Solution & Answer

Want to see the full answer?

Check out a sample textbook solution

See solution

Students have asked these similar questions

a. What is the eluent used in the column chromatography here (a “silica plug filtration” is essentially a very short column)? b. The spectroscopy of compound 5b is described in the second half of this excerpt, including 1H-NMR and 13C-NMR (which you will learn about in CHEM 2412L), MS (which you will learn about later in CHEM 2411L) and IR. One of the IR signals is at 3530 cm-1. What functional group does this indicate might be present in compound 5b?

Steps and explanations. Also provide, if possible, ways to adress this kind of problems in general.

a. The first three lines of this procedure describe the reaction used to make compound 5b. In the fourth line, hexane and sodium bicarbonate are added. What organic lab technique is being used here? b. What is the purpose of the Na2SO4? c. What equipment would you use to “concentrate [a solution] under reduced pressure”?