For the reaction <math><mrow><mn>2</mn><mi>A</mi><mo>?</mo><mi>B</mi><mo>+</mo><mi>C</mi><mo>,</mo><msub><mrow><mi>K</mi></mrow><mrow><mi>C</mi></mrow></msub><mo>=</mo><mn>4</mn><mo>×</mo><mn>1</mn><msup><mrow><mn>0</mn></mrow><mrow><mo>−</mo><mn>3</mn></mrow></msup></mrow></math> . At a given time, the composition of reaction mixture is: <math><mrow><mrow><mo>[</mo><mrow><mi>A</mi></mrow><mo>]</mo></mrow><mo>=</mo><mrow><mo>[</mo><mrow><mi>B</mi></mrow><mo>]</mo></mrow><mo>=</mo><mrow><mo>[</mo><mrow><mi>C</mi></mrow><mo>]</mo></mrow><mo>=</mo><mn>2</mn><mo>×</mo><mn>1</mn><msup><mrow><mn>0</mn></mrow><mrow><mo>−</mo><mn>3</mn></mrow></msup><mi>M</mi></mrow></math> . Then, which of the following is correct?

2? +C, KC=4×10−3At a given time t, Qc is to be calculated and been compared with Kc .QC= [B] [C] [A]2= (2×10−3) (2×10−3) (2×10−3)2QC=1As Qc>Kc , so reaction has a tendency to move backward.

For the reaction&nbsp;<math><mrow><mn>2</mn><mi>A</mi><mo>?</mo><mi>B</mi><mo>+</mo><mi>C</mi><mo>,</mo><msub><mrow><mi>K</mi></mrow><mrow><mi>C</mi></mrow></msub><mo>=</mo><mn>4</mn><mo>×</mo><mn>1</mn><msup><mrow><mn>0</mn></mrow><mrow><mo>−</mo><mn>3</mn></mrow></msup></mrow></math>&nbsp;. At a given time, the composition of reaction mixture is:&nbsp;<math><mrow><mrow><mo>[</mo><mrow><mi>A</mi></mrow><mo>]</mo></mrow><mo>=</mo><mrow><mo>[</mo><mrow><mi>B</mi></mrow><mo>]</mo></mrow><mo>=</mo><mrow><mo>[</mo><mrow><mi>C</mi></mrow><mo>]</mo></mrow><mo>=</mo><mn>2</mn><mo>×</mo><mn>1</mn><msup><mrow><mn>0</mn></mrow><mrow><mo>−</mo><mn>3</mn></mrow></msup><mi>M</mi></mrow></math> . Then, which of the following is correct?

Reaction has a tendency to go in backward direction.

Reaction is at equilibrium.

Reaction has a tendency to go in forward direction.

Reaction has gone to completion in forward direction.

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Chemistry Class 11th Chemistry Classification of Elements and Periodicity in Properties

For the reaction $2 A ? B + C, K_{C} = 4 \times 1 0^{- 3}$ . At a given time, the composition of reaction mixture is: $[A] = [B] = [C] = 2 \times 1 0^{- 3} M$ . Then, which of the following is correct?

Option 1 -

Reaction is at equilibrium.

Option 2 -

Reaction has a tendency to go in forward direction.

Option 3 -

Reaction has a tendency to go in backward direction.

Option 4 -

Reaction has gone to completion in forward direction.

4 Views | Posted a month ago

Asked by Shiksha User

1 Answer

Answered by

Payal Gupta | Contributor-Level 10

a month ago

Correct Option - 3

Detailed Solution:

$2 ? + C, K_{C} = 4 \times 1 0^{- 3}$

At a given time $t, Q_{c}$ is to be calculated and been compared with $K_{c}$ .

$Q_{C} = \frac{[B] [C]}{{[A]}^{2}} = \frac{(2 \times 1 0^{- 3}) (2 \times 1 0^{- 3})}{{(2 \times 1 0^{- 3})}^{2}}$

$Q_{C} = 1$

As $Q_{c} > K_{c}$ , so reaction has a tendency to move backward.

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For the reaction $2 A ? B + C, K_{C} = 4 \times 1 0^{- 3}$ . At a given time, the composition of reaction mixture is: $[A] = [B] = [C] = 2 \times 1 0^{- 3} M$ . Then, which of the following is correct?

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For the reaction 2A?B+C,KC=4×10−3 . At a given time, the composition of reaction mixture is: [A]=[B]=[C]=2×10−3M . Then, which of the following is correct?

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For the reaction $2 A ? B + C, K_{C} = 4 \times 1 0^{- 3}$ . At a given time, the composition of reaction mixture is: $[A] = [B] = [C] = 2 \times 1 0^{- 3} M$ . Then, which of the following is correct?