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Write the equilibrium constant expression for the reaction if the equilibrium constant is 78

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Final Answer:

The equilibrium constant expression for the reaction is given by:


\[ K_c = \frac{[\text{Products}]}{[\text{Reactants}]} = 78 \]

Step-by-step explanation:

In the given question, the equilibrium constant (\(K_c\)) is stated to be 78. The equilibrium constant expression for a reaction is defined as the ratio of the concentrations of products to reactants, each raised to the power of their respective coefficients in the balanced chemical equation. In mathematical terms, it is represented as:


\[ K_c = ([C]^c [D]^d)/([A]^a [B]^b) \]

where
\(a, b, c, \)and
\(d\) are the coefficients of the balanced chemical equation
\(aA + bB \rightleftharpoons cC + dD\). The square brackets denote molar concentrations.

In the given context, the equilibrium constant is specified as 78. This implies that, at equilibrium, the ratio of the concentrations of products to reactants is equal to 78. It's important to note that the value of the equilibrium constant is independent of the initial concentrations and depends solely on the stoichiometry of the reaction.

To elaborate further, if the reaction is represented as
\(aA + bB \rightleftharpoons cC + dD\), the equilibrium constant expression would be
\(K_c = ([C]^c [D]^d)/([A]^a [B]^b) = 78\). This mathematical relationship encapsulates the balanced nature of the reaction at equilibrium. The magnitude o
f \(K_c\)provides insights into the position of the equilibrium—larger values indicating a shift toward the products, and smaller values favoring the reactants.

User Paul Miller
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7 votes

Final answer:

The equilibrium constant expression for a reaction is the ratio of the concentrations of the products to the concentrations of the reactants, with each concentration raised to the power of its coefficient in the balanced chemical equation.

Step-by-step explanation:

The equilibrium constant expression for a reaction is the ratio of the concentrations of the products to the concentrations of the reactants, with each concentration raised to the power of its coefficient in the balanced chemical equation. In this case, if the equilibrium constant is 78, the equilibrium constant expression would be:



[Products] / [Reactants] = 78



It is important to note that the specific reactants and products must be identified in order to write the equilibrium constant expression accurately.

User Helin Wang
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7.9k points

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