Chemistry>Physical Chemistry>Equilibrium>Acids, Bases and Salts

EASY

Earn 100

Which molecule is an electron donor?

50% studentsanswered this correctly

Important Questions on Equilibrium

MEDIUM

Chemistry>Physical Chemistry>Equilibrium>Acids, Bases and Salts

Match the reactants in List-I with the products in List-II.

	List - I		List - II
(a)	$H_{2} O + H_{2} S$	(i)	$(H_{3} O^{+}, {HS}^{-})$
(b)	$H_{2} O + N^{3 -}$	(ii)	$({NH}_{3}, {OH}^{-})$
(c)	$H_{2} O + {SiCl}_{4}$	(iii)	$({OH}^{-}, H_{3} S^{+})$
(d)	$H_{2} O + F_{2}$	(iv)	$({SiO}_{2}, HCl)$
		(v)	$({SiO}_{4}^{4}, {Cl}_{2})$
		(vi)	$(O_{2}, F^{-})$
		(vii)	$(HF, {OH}^{-})$
		(viii)	$({OH}^{-}, {HN}_{3})$

EASY

Chemistry>Physical Chemistry>Equilibrium>Acids, Bases and Salts

{BF}_{3}

is an acid, according to

EASY

Chemistry>Physical Chemistry>Equilibrium>Acids, Bases and Salts

The conjugate base of

{NH}_{3}

is

EASY

Chemistry>Physical Chemistry>Equilibrium>Acids, Bases and Salts

Which of the following compound CANNOT act as a Lewis base?

MEDIUM

Chemistry>Physical Chemistry>Equilibrium>Acids, Bases and Salts

Conjugate base for Bronsted acids

H_{2} O

and

HF

are:

EASY

Chemistry>Physical Chemistry>Equilibrium>Acids, Bases and Salts

Acidity of

{BF}_{3}

can be explained on which of the following concepts?

EASY

Chemistry>Physical Chemistry>Equilibrium>Acids, Bases and Salts

Which of the following is the strongest base?

EASY

Chemistry>Physical Chemistry>Equilibrium>Acids, Bases and Salts

In the reaction $B (OH)_{3} + 2 H_{2} O ⟶ {[B (OH)_{4}]}^{-} + H_{3} O$

$B (OH)_{3}$ functions as

HARD

Chemistry>Physical Chemistry>Equilibrium>Acids, Bases and Salts

In an acid-base titration,

0.1 M H C l

solution was added to the

N a O H

solution of unknown strength. Which of the following correctly shown the change of

p H

of the titration mixture in this experiment?
Question Image

Question Image

MEDIUM

Chemistry>Physical Chemistry>Equilibrium>Acids, Bases and Salts

The strength of an aqueous

N a O H

solution is most accurately determined by titrating: (Note: consider that an appropriate indicator is used)

EASY

Chemistry>Physical Chemistry>Equilibrium>Acids, Bases and Salts

Assertion: The amphoteric behaviour of water is explained by Lewis acid base theory

Reason: water acts as acid with ${NH}_{3}$ and base with $H_{2} S$

EASY

Chemistry>Physical Chemistry>Equilibrium>Acids, Bases and Salts

In the following reactions,

ZnO

is respectively acting as a/an,

(i)

ZnO + {Na}_{2} O \to {Na}_{2} {ZnO}_{2}

(ii)

ZnO + {CO}_{2} \to {ZnCO}_{3}

MEDIUM

Chemistry>Physical Chemistry>Equilibrium>Acids, Bases and Salts

The volume of

0.02 M

aqueous

HBr

required to neutralize

10.0 mL

of

0.01 M

aqueous

Ba (OH)_{2}

is (Assume complete neutralization)

EASY

Chemistry>Physical Chemistry>Equilibrium>Acids, Bases and Salts

What kind of a molecule

{AlCl}_{3}

is ?

MEDIUM

Chemistry>Physical Chemistry>Equilibrium>Acids, Bases and Salts

Which of the following is a Lewis acid?

HARD

Chemistry>Physical Chemistry>Equilibrium>Acids, Bases and Salts

Amongst the given options which of the following molecules/ion acts as a Lewis acid?

MEDIUM

Chemistry>Physical Chemistry>Equilibrium>Acids, Bases and Salts

The exact volumes of

1 M NaOH

solution required to neutralise

50 mL

of

1 M H_{3} {PO}_{3}

solution and

100 mL

of

2 M H_{3} {PO}_{2}

solution, respectively, are :

EASY

Chemistry>Physical Chemistry>Equilibrium>Acids, Bases and Salts

If you spill a chemical toilet cleaning liquid on your hand, your first aid would be:

MEDIUM

Chemistry>Physical Chemistry>Equilibrium>Acids, Bases and Salts

Which of the following are Lewis acids?

MEDIUM

Chemistry>Physical Chemistry>Equilibrium>Acids, Bases and Salts

For standardizing

NaOH

solution, which of the following is used as a primary standard?