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Byju's Answer

Standard XII

Chemistry

Assigning Oxidation Numbers

The following...

Question

The following reactions occurs at 500K . Arrange them in order of increasing tendency to proceed to completion.
1) $2 N O C I (g) ⇌ 2 N O (g) + C l_{2} (g); K_{p} = 1.7 \times 10^{- 2}$
2) $N_{2} O_{4} (g) ⇌ 2 N O_{2} (g); K_{p} = 1.5 \times 10^{- 3}$
3) $2 S O_{3} (g) ⇌ S O_{2} (g) + O_{2} (g); K_{p} = 1.3 \times 10^{- 5}$
4) $2 N O_{2} (g) ⇌ 2 N O (g) + O_{2} (g); K_{p} = 5.9 \times 10^{- 5}$

2 < 1 < 4 < 3

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3 < 4 < 2 < 1

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1 < 3 < 4 < 2

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4 < 3 < 1 < 2

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Solution

The correct option is D 3 < 4 < 2 < 1
Equilibrium constant denotes the tendency of a reaction to go to completion. Higher the value of $K_{p}$ or $K_{c}$ , more is its tendency to go towards completion.
Hence, the required order is:
$3 < 4 < 2 < 1$

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Similar questions

Q. The following reaction occurs at 500 K. Arrange them in the order of increasing tendency to proceed to completion.
(I)

H_{2} (g) + I_{2} (g) ⇌ 2 H I (g); K_{c} = 1.8 \times 10^{- 3}

(II)

N_{2} O_{4} ⇌ 2 N O_{2} (g); K_{c} = 3 \times 10^{- 3}

(III)

P C l_{5} (g) ⇌ P C l_{3} (g) + C l_{2} (g); K_{c} = 1.3 \times 10^{- 4}

(IV)

2 S O_{3} (g) ⇌ 2 S O_{2} (g) + O_{2} (g); K_{c} = 1.3 \times 10^{- 5}

Q. The value of

\frac{K_{p}}{K_{c}}

for the following reactions at

300 K

are, respectively:

N_{2} (g) + O_{2} (g) ⇌ 2 N O (g)

N_{2} O_{4} (g) ⇌ 2 N O_{2} (g)

N_{2} (g) + 3 H_{2} (g) ⇌ 2 N H_{3} (g)

[A t 300 K, R T = 24.62 d m^{3} a t m m o l^{- 1}]

Q. For the reaction,

2 N O_{2} (g) ⇌ 2 N O (g) + O_{2} (g)

.
(

K_{c} = 1.8 \times 10^{- 6}

184^{o} C

(R = 0.0831 k J / (m o l . K J))

when

K_{p}

and

K_{c}

are compared at

184^{o} C

it is found that
(1) Whether

K_{p}

is greater then, less then or equal to

K_{c}

depends upon the total gas pressure
(2)

K_{p} = K_{c}

(3)

K_{p}

is less then

K_{c}

(4)

K_{p}

is greater then

K_{c}

Q. For the reaction

2 {N O}_{2} (g) ⇌ 2 N O (g) + O_{2} (g)

K_{c} = 1.8 \times 10^{- 6}

184^{o} C

R = 0.0831 k J K^{- 1} {m o l}^{- 1}

when

K_{p}

and

K_{c}

are compared at

184^{o} C

it is found that:

Q. For reaction,

2 N O {C l}_{(g)} ⇌ 2 {N O}_{(g)} + {C l}_{2 (g)}; K_{c}

427^{o} C

3 \times 10^{- 6} L {m o l}^{- 1}

. The value of

K_{p}

is nearly:

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The following reactions occurs at 500K . Arrange them in order of increasing tendency to proceed to completion.1) 2NOCI(g)⇌2NO(g)+Cl2(g);Kp=1.7×10−22) N2O4(g)⇌2NO2(g);Kp=1.5×10−33) 2SO3(g)⇌SO2(g)+O2(g);Kp=1.3×10−54) 2NO2(g)⇌2NO(g)+O2(g);Kp=5.9×10−5

The correct option is D 3 < 4 < 2 < 1Equilibrium constant denotes the tendency of a reaction to go to completion. Higher the value of Kp or Kc, more is its tendency to go towards completion.Hence, the required order is:3<4<2<1

The correct option is D 3 < 4 < 2 < 1
Equilibrium constant denotes the tendency of a reaction to go to completion. Higher the value of $K_{p}$ or $K_{c}$ , more is its tendency to go towards completion.
Hence, the required order is:
$3 < 4 < 2 < 1$