Ionic Equilibrium

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What is a base according to the Lewis concept?

A substance that can accept a proton

A substance that can furnish a pair of electrons to form a coordinate bond (correct)

A substance that can accept a pair of electrons

A substance that can donate a proton

Which of the following is NOT a Lewis acid?

HCl (correct)

H2SO4

SiF4

BF3

What is the key difference between a Bronsted base and a Lewis base?

A Bronsted base is a stronger base than a Lewis base

All Bronsted bases are also Lewis bases, but not all Lewis bases are Bronsted bases (correct)

A Lewis base is always a stronger base than a Bronsted base

A Lewis base can donate a pair of electrons, but a Bronsted base cannot

Which of the following molecules can act as a Lewis acid?

CO2 Signup and view all the answers

What is the characteristic of a Lewis acid?

It can accept a pair of electrons Signup and view all the answers

What is a characteristic of Bronsted-Lowry concept?

It includes ionic species to act as acids or bases Signup and view all the answers

Which of the following is a conjugate acid-base pair?

HCl and ClO4- Signup and view all the answers

What is a limitation of Bronsted-Lowry concept?

It can explain the acid-base reactions in non-aqueous medium Signup and view all the answers

According to Lewis concept, what is the definition of an acid?

An electron pair acceptor Signup and view all the answers

What is a characteristic of substances like BF3 and AlCl3?

They do not have hydrogen and cannot give a proton Signup and view all the answers

What is the primary characteristic of protogenic solvents?

They have the tendency to produce protons Signup and view all the answers

According to Arrhenius concept, what type of ion do bases ionize to furnish in water?

OH- ions Signup and view all the answers

In a reaction between a strong electrolyte and a weak electrolyte, which electrolyte will primarily provide the fluoride ions?

The strong electrolyte Signup and view all the answers

What is the main limitation of the protonic definition of acids and bases?

All of the above Signup and view all the answers

Which type of solvent is capable of acting as both a proton donor and a proton acceptor?

Amphiprotic solvent Signup and view all the answers

What is the primary characteristic of strong electrolytes in terms of degree of ionization?

They have an α value of nearly 1 Signup and view all the answers

Which type of electrolyte undergoes decomposition when an electric current is passed through them?

Electrolytic conductors Signup and view all the answers

What is the effect of a high dielectric constant of a solvent on its ionising power?

It increases its ionising power Signup and view all the answers

What happens to the degree of ionization of a weak electrolyte at moderate concentrations?

It is very less than 1 Signup and view all the answers

How do ions behave in an ionic equilibrium state?

They behave osmotically as molecules Signup and view all the answers

What is the condition for a solution to be neutral?

[H+] = [OH-] = 1 × 10^-7 M Signup and view all the answers

What type of salts are formed by the addition of two simple salts?

Double salts Signup and view all the answers

What is the pH of a solution if [H+] = 1 × 10^-5 M?

5 Signup and view all the answers

What is the concentration of H+ ions in a solution with a pH of 10?

1 × 10^-10 M Signup and view all the answers

What is the characteristic of basic salts?

They are formed by incomplete neutralization of polyacidic bases Signup and view all the answers

What is the relationship between the value of K w and the temperature?

The value of K w increases with the increase of temperature Signup and view all the answers

What is the pH of a solution with a hydroxyl ion concentration of 10^(-7) M?

7 Signup and view all the answers

What type of salt is NH 4 PO4?

Mixed salt Signup and view all the answers

What is the characteristic of a solution with a pH less than 7?

Acidic Signup and view all the answers

What is the relationship between the ionic product of water and the pH of a solution?

The ionic product of water is less than the pH of a solution Signup and view all the answers