For the reaction 2 NO 2 ( g ) ⇌ 2 NO ( g ) + O 2 ( g ) , K C = 1 . 8 × 10 - 6 at 184 ° C and R = 0 . 0821 L . atm K - 1 mol - 1 . When K p and K c are compared at 184 ° C , it is found that:

K P ≤ K C depends on the pressure of the gases.

At constant temperature, the equilibrium constant ( K p ) for the decomposition reaction: N 2 O 4 ⇌ 2 NO 2 , is expressed by K p = 4 x 2 P ( 1 - x 2 ) , where P is the pressure and x is the extent of decomposition. Which of the following statements is true?

K p remains constant with change in P and x .

K p increases with increase in P .

K p increases with increase in x .

K p increases with decrease in x .

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For the reaction $2 {NO}_{2} (g) ⇌ 2 NO (g) + O_{2} (g)$ , $K_{C} = 1.8 \times 10^{- 6}$ at $184 ° C$ and $R = 0.0821 L . atm K^{- 1} {mol}^{- 1}$ . When $K_{p}$ and $K_{c}$ are compared at $184 ° C$ , it is found that:

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Important Questions on Chemical Equilibrium

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Chapterwise/Topicwise Daily Practice Problems (DPP) Physical Chemistry 1 NEET>Chapter 5 - Chemical Equilibrium>TOPICWISE QUESTIONS>Q 49

${PCl}_{5}$ dissociates in a closed container as ${PCl}_{5} (g) ⇌ {PCl}_{3} (g) + {Cl}_{2} (g)$ .

If the total pressure at the equilibrium of the reaction mixture is $P$ , and the degree of dissociation of ${PCl}_{5}$ is $α$ , what is the partial pressure of ${PCl}_{3}$ ?

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Chapterwise/Topicwise Daily Practice Problems (DPP) Physical Chemistry 1 NEET>Chapter 5 - Chemical Equilibrium>TOPICWISE QUESTIONS>Q 50

At constant temperature, the equilibrium constant ( $K_{p}$ ) for the decomposition reaction: $N_{2} O_{4} ⇌ 2 {NO}_{2},$ is expressed by $K_{p} = \frac{4 x^{2} P}{(1 - x^{2})}$ , where $P$ is the pressure and $x$ is the extent of decomposition. Which of the following statements is true?

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Chapterwise/Topicwise Daily Practice Problems (DPP) Physical Chemistry 1 NEET>Chapter 5 - Chemical Equilibrium>TOPICWISE QUESTIONS>Q 51

{Ag}^{+} + {NH}_{3} ⇌ {[Ag ({NH}_{3})]}^{+}; K_{1} = 1.6 \times 10^{3}

and

{[Ag ({NH}_{3})]}^{+} + {NH}_{3} ⇌ {[Ag {({NH}_{3})}_{2}]}^{+}; K_{2} = 6.8 \times 10^{3}

, the formation constant of

{[Ag {({NH}_{3})}_{2}]}^{+}

is:

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Chapterwise/Topicwise Daily Practice Problems (DPP) Physical Chemistry 1 NEET>Chapter 5 - Chemical Equilibrium>TOPICWISE QUESTIONS>Q 52

In an aqueous solution, of volume

500 mL

, when the reaction

2 {Ag}^{+} + Cu ⇌ {Cu}^{2 +} + 2 Ag

reached equilibrium, the

[{Cu}^{2 +}]

was

XM

. If

500 mL

of water is further added, at equilibrium,

[{Cu}^{2 +}]

will be:

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Chapterwise/Topicwise Daily Practice Problems (DPP) Physical Chemistry 1 NEET>Chapter 5 - Chemical Equilibrium>TOPICWISE QUESTIONS>Q 53

$40 %$ of a mixture of $2$ moles of $N_{2}$ and $6$ moles of $H_{2}$ react to give ${NH}_{3}$ according to the equation $N_{2} (g) + 3 H_{2} (g) ⇌ 2 {NH}_{3} (g)$ at constant temperature and pressure. Then the ratio of the final volume to the initial volume of gases are

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Chapterwise/Topicwise Daily Practice Problems (DPP) Physical Chemistry 1 NEET>Chapter 5 - Chemical Equilibrium>TOPICWISE QUESTIONS>Q 54

At the temperature

T

, a compound

{AB}_{2} (g)

dissociates, according to the reaction

2 {AB}_{2} (g) ⇌ 2 AB (g) + B_{2} (g)

with a degree of dissociation

x

, which is small compared with unity. The expression for

K_{p}

in terms of

x

and the total pressure,

P

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Chapterwise/Topicwise Daily Practice Problems (DPP) Physical Chemistry 1 NEET>Chapter 5 - Chemical Equilibrium>TOPICWISE QUESTIONS>Q 55

$X_{2} + X^{-} ⇌ X_{3}^{-} (X = Iodine)$

This reaction is set up in an aqueous medium. The reaction started with $1 mol$ of $X_{2}$ and $0.5 mol$ of $X^{-}$ in a $1 L$ flask. After equilibrium is reached, the excess ${AgNO}_{3}$ gave $0.25 mol$ of yellow precipitate. The equilibrium constant is:

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Chapterwise/Topicwise Daily Practice Problems (DPP) Physical Chemistry 1 NEET>Chapter 5 - Chemical Equilibrium>TOPICWISE QUESTIONS>Q 56

One mole of

N_{2} O_{4} (g) at 300 K

is kept in a closed vessel at

1 atm

pressure. It is heated to $600 K$ when

20 %

by mass of

N_{2} O_{4} (g)

decomposes to

{NO}_{2} (g)

. The resultant pressure is:

For the reaction 2NO2(g) ⇌ 2NO(g) + O2(g), KC=1.8×10-6 at 184°C and R=0.0821 L.atm K-1 mol-1. When Kp and Kc are compared at 184°C, it is found that:

Important Questions on Chemical Equilibrium

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For the reaction $2 {NO}_{2} (g) ⇌ 2 NO (g) + O_{2} (g)$ , $K_{C} = 1.8 \times 10^{- 6}$ at $184 ° C$ and $R = 0.0821 L . atm K^{- 1} {mol}^{- 1}$ . When $K_{p}$ and $K_{c}$ are compared at $184 ° C$ , it is found that: