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Byju's Answer

Standard XII

Chemistry

Characteristics of Equilibrium Constant

Then equilibr...

Question

Then equilibrium constant for the reaction is:

K_{1} + K_{2} + K_{3}

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\sqrt{K_{1} K_{2} K_{3}}

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K_{1} \times K_{2} \times K_{3}

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\frac{1}{K_{1} K_{2} K_{3}}

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Solution

The correct option is C $K_{1} \times K_{2} \times K_{3}$
Given three different equibrium reactions are as follows:
$H_{3} P O_{4} K_{1} - \to H^{+} + H_{2} P O_{4}^{-}$
$H_{2} P O_{4}^{-} K_{2} - \to H^{+} + H P O_{4}^{2 -}$
$H P O_{4}^{2 -} K_{3} - \to H^{+} + P O_{4}^{3 -}$
The overall reaction can obtained by adding three individual reactions.
$H_{3} P O_{4} K - \to 3 H^{+} + P O_{4}^{3 -}$
In such a case, the value of the equilibrium constant of the overall reaction is the product of the values of the equilibrium constants of three individual reactions.
Thus, $K = K_{1} \times K_{2} \times K_{3}$

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Similar questions

For $C u^{2 +}$ ion in $[C u (H_{2} O)_{4} (e n)]^{2 +}, [C u (H_{2} O)_{2} (e n)_{2}]^{2 +}$ and $[C u (e n)_{3}]^{2 +}$ with the stability constant $k_{1}, k_{2}$ and $k_{3}$ respectively, which of the following holds true?

Q. The following equilibrium are given

N_{2} + 3 H_{2} \to 2 N H_{3} - K_{1}

N_{2} + O_{2} \to 2 N O - K_{2}

H_{2} + 1 / 2 O_{2} \to H_{2} O - K_{3}

The equilibrium constant of reaction,

3 H_{2} + 5 / 2 O_{2} \to 2 N O + 3 H_{2} O

, in terms of

K_{1}, K_{2}, K_{3}

Q. The equilibrium constants for the reactions are

H_{3} P O_{4}_{1} H^{+} + H_{2} P O_{4}^{-}; K_{1}

H_{2} P O_{4}^{-}_{2} H^{+} + H P O_{4}^{2 -}; K_{2}

H P O_{4}^{2 -}_{3} H^{+} + P O_{4}^{3 -}; K_{3}

The equilibrium constant for,

H_{3} P O_{4} ⇌ 3 H^{+} + P O_{4}^{3 -}

will be :

Q. At

25^{o}

C, the equilibrium constants

K_{1}, K_{2}

and

K_{3}

of three reactions are:

N_{2} + 3 H_{2} ⇌ 2 N H_{3}; K_{1}

N_{2} + O_{2} ⇌ 2 N O; K_{2}

H_{2} + \frac{1}{2} O_{2} ⇌ H_{2} O; K_{3}

The equilibrium constants for the oxidation of

N H_{3}

by oxygen to given

N O

is:

Q. If

K_{1}, K_{2} a n d K_{3}

are equilibrium constant for formation of

A D, A D_{2} a n d A D_{3}

respectively as follow

A + D ⇌ A D, A D + D ⇌ A D_{2}, A D_{2} + D ⇌ A D_{3}

then equilibrium constant 'K" for

A + 3 D ⇌ A D_{3}

is related as

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