Graph of a reversible process; is given. Analyse the graph and answer the following question. Identify the part of the graph which represents the equilibrium state?

AC part of the graph represents the equilibrium state. At equilibrium, the rates of forward and backward reactions become equal. Even at equilibrium, the reactant molecules react to form product molecules and product molecules react to form reactant molecules. Hence, equilibrium is said to be dynamic equilibrium at the molecular level.

Graph of a reversible process; N 2 + 3 H 2 ⇌ 2 NH 3 + Heat is given. Analyse the graph and answer the following question. Identify the part of the graph which represents the forward reaction [ OA, BA, AC]

BA part of the graph represents the forward reaction. The forward reaction speeds up temporarily as a result of the addition of reactants. The position of equilibrium shifts as more ammonia ( NH 3 ) is produced. The concentration of ammonia increases, while the concentration of N 2 and H 2 decreases. The forward reaction in the production of ammonia is exothermic.

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Differentiate between physical and chemical equilibrium.

Important Questions on Equilibrium

HARD

Chemistry>Physical Chemistry>Equilibrium>Types of Equilibrium

The thermal dissociation equilibrium of

{CaCO}_{3} (s)

is studied under different conditions.

{CaCO}_{3} (s) ⇌ CaO (s) + {CO}_{2} (g)

For this equilibrium, the correct statement(s) is/are

EASY

Chemistry>Physical Chemistry>Equilibrium>Types of Equilibrium

The

pH

of the blood is maintained by buffer system given by

MEDIUM

Chemistry>Physical Chemistry>Equilibrium>Types of Equilibrium

Graph of a reversible process;

Question Image

is given. Analyse the graph and answer the following question.

Question Image

Identify the part of the graph which represents the equilibrium state?

MEDIUM

Chemistry>Physical Chemistry>Equilibrium>Types of Equilibrium

The equilibrium constant for the reaction is

P_{4} (s) + 50_{2} (g) ⇌ P_{4} 0_{10} (s)

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Chemistry>Physical Chemistry>Equilibrium>Types of Equilibrium

Graph of a reversible process,

Question Image

is given. Analyse the graph and answer the following question.

Question Image

From the given statements, select the correct ones regarding chemical equilibrium.

(i0 The chemical equilibrium is 'static' at the molecular level.

(ii) Both reactants and products co-exist.

(iii) The rates of forward reaction and backward reactions are equal.

(iv) Chemical equilibrium is attained in an open system.

EASY

Chemistry>Physical Chemistry>Equilibrium>Types of Equilibrium

Graph of a reversible process;

$N_{2} + 3 H_{2} \overset{}{⇌} 2 {NH}_{3} + Heat$

is given. Analyse the graph and answer the following question.

Question Image

Identify the part of the graph which represents the forward reaction

[ OA, BA, AC]

EASY

Chemistry>Physical Chemistry>Equilibrium>Types of Equilibrium

Which of the following statement is correct about chemical equilibrium?

(i) At equilibrium both the reactants and products coexist.

(ii) At equilibrium rate of forward reaction is greater than the rate of backward reaction.

MEDIUM

Chemistry>Physical Chemistry>Equilibrium>Types of Equilibrium

At what stage a reversible reaction is considered to have attained equilibrium?

EASY

Chemistry>Physical Chemistry>Equilibrium>Types of Equilibrium

${Au}_{(s)} ⇌ {Au}_{(l)}$

Above equilibrium is favoured at:

MEDIUM

Chemistry>Physical Chemistry>Equilibrium>Types of Equilibrium

Write an example for gas-liquid equilibrium.

MEDIUM

Chemistry>Physical Chemistry>Equilibrium>Types of Equilibrium

The reaction,

{Naphthalene}_{(s)} ⇌ {Naphthalene}_{(g)}

is an example of

MEDIUM

Chemistry>Physical Chemistry>Equilibrium>Types of Equilibrium

Define equilibrium mixture.

EASY

Chemistry>Physical Chemistry>Equilibrium>Types of Equilibrium

A chemical reaction is at equilibrium when

MEDIUM

Chemistry>Physical Chemistry>Equilibrium>Types of Equilibrium

What is a physical equilibrium?

MEDIUM

Chemistry>Physical Chemistry>Equilibrium>Types of Equilibrium

State the condition when a body is in dynamic equilibrium. Give one example each of dynamic equilibrium.

EASY

Chemistry>Physical Chemistry>Equilibrium>Types of Equilibrium

A compound having the formula

{NH}_{2} {CH}_{2} COOH

will behave

EASY

Chemistry>Physical Chemistry>Equilibrium>Types of Equilibrium

What do you understand by term 'Equilibrium'? Explain physical equilibrium with one suitable example.

HARD

Chemistry>Physical Chemistry>Equilibrium>Types of Equilibrium

Can equilibrium be achieved between water and its vapours in an open vessel? Explain.

MEDIUM

Chemistry>Physical Chemistry>Equilibrium>Types of Equilibrium

In the reaction

2 P (g) + Q (g) ⇌ 3 R (g) + S (g)

, if

2 moles

each of

P

and

Q

taken initially in a

1

L

flask, at equilibrium, which is true?

EASY

Chemistry>Physical Chemistry>Equilibrium>Types of Equilibrium

Which of the following compounds helps in achieving equilibrium between

O_{2}

and

{CO}_{2}

, in the atmosphere?

Differentiate between physical and chemical equilibrium.

Important Questions on Equilibrium

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