Which is the correct expression for Keq when the chemical reaction is as follows:
N2 + 3H2 2NH3.
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Keq = (NH3)^2/(N2)(H2)^3
It's always (product)/(reactants) and each coefficient becomes an exponent.
To find the correct expression for Keq (the equilibrium constant) for the given chemical reaction N2 + 3H2 -> 2NH3, follow these steps:
1. Write the balanced equation for the chemical reaction: N2 + 3H2 -> 2NH3.
2. Determine the molar concentrations of the reactants and products at equilibrium. Let's say the molar concentration of N2 is [N2], the molar concentration of H2 is [H2], and the molar concentration of NH3 is [NH3].
3. The expression for Keq can be written as the ratio of the product concentrations raised to their stoichiometric coefficients divided by the reactant concentrations raised to their stoichiometric coefficients. For the given reaction, the expression for Keq is:
Keq = ([NH3]^2) / ([N2] * [H2]^3)
Remember that the coefficients in the balanced equation represent the stoichiometric ratios between the reactants and products.
So, the correct expression for Keq for the given chemical reaction N2 + 3H2 -> 2NH3 is Keq = ([NH3]^2) / ([N2] * [H2]^3).