AIEEE 2010 | Chemical Equilibrium Question 108 | Chemistry

In aqueous solution the ionization constants for carbonic acid are
K₁ = 4.2 x 10^–7 and K₂ = 4.8 x 10^–11
Select the correct statement for a saturated 0.034 M solution of the carbonic acid.

The concentration of $$CO_3^{2−}$$ is 0.034 M.

The concentration of $$CO_3^{2−}$$ is greater than that of $$HCO_3^{−}$$

The concentration of H⁺ and $$HCO_3^−$$ are approximately equal.

The concentration of H⁺ is double that of $$CO_3^−$$.

AIEEE 2008

MCQ (Single Correct Answer)

-1

The equilibrium constants K_P1 and K_P2 for the reactions X $$\leftrightharpoons$$ 2Y and Z $$\leftrightharpoons$$ P + Q, respectively are in the ratio of 1 : 9. If the degree of dissociation of X and Z be equal then the ratio of total pressure at these equilibria is :

1 : 36

1 : 1

1 : 3

1 : 9

AIEEE 2008

MCQ (Single Correct Answer)

-1

For the following three reactions a, b and c, equilibrium constants are given:
a. CO (g) + H₂O (g) $$\leftrightharpoons$$ CO₂(g) + H₂ (g) ; K₁
b. CH₄ (g) + H₂O (g) $$\leftrightharpoons$$ CO(g) + 3H₂ (g) ; K₂
c. CH₄ (g) + 2H₂O (g) $$\leftrightharpoons$$ CO₂(g) + 4H₂ (g) ; K₃

$${K_1}\sqrt {{K_2}} = {K_3}$$

K₂K₃ = K₁

K₃ = K₁K₂

K₃.$$K_2^3$$ = $$K_1^2$$

AIEEE 2006

MCQ (Single Correct Answer)

-1

The equilibrium constant for the reaction
SO₃ (g) $$\leftrightharpoons$$ SO₂ (g) + $$1 \over 2$$ O₂ (g)
is K_c = 4.9 $$\times$$ 10^–2. The value of K_c for the reaction
2SO₂ (g) + O₂ (g) $$\leftrightharpoons$$ 2SO₃ (g) will be :

416

9.8 $$\times$$ 10^-2

4.9 $$\times$$ 10^-2

2.40 $$\times$$ 10^-3

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