Please help..Write the equation for the equilibrium constant (K) of the reaction.
2K2CrO4 + 2HCl --><-- Cr2O7 + H2O + 2KCl
(K2CrO4 is chromate) and (Cr2O7 is dichromate)
The equation for the equilibrium constant (K) of the reaction can be written using the concentrations of the reactants and products. In this case, the equation is:
K = [Cr2O7] * [H2O] * [KCl]^2 / ([K2CrO4]^2 * [HCl]^2)
Here, the square brackets denote the concentrations of the respective species. The equilibrium constant (K) represents the ratio of the concentration of the products raised to their stoichiometric coefficients divided by the concentration of the reactants raised to their stoichiometric coefficients.
To write the equation for the equilibrium constant (K) of the reaction, we need to express the concentrations of the products and reactants. The equilibrium constant is defined as the ratio of the product concentrations raised to their stoichiometric coefficients divided by the reactant concentrations raised to their stoichiometric coefficients.
The balanced equation for the reaction is:
2K2CrO4 + 2HCl ⇌ Cr2O7 + H2O + 2KCl
The concentrations can be expressed as follows:
[A] represents the concentration of species A.
K = ([Cr2O7] * [H2O] * [KCl]^2) / ([K2CrO4]^2 * [HCl]^2)
To calculate the equilibrium constant (K), you need to know the concentrations of the species involved in the reaction at equilibrium. The concentrations can be measured experimentally or given in the problem statement. The equation reflects the stoichiometry of the reaction and the molar ratios of the reactants and products.
Remember to use square brackets around the concentrations of the species, and if the concentrations are given in moles per liter (Molarity), they can be directly substituted into the equation. If the concentrations are given in different units, you may need to make appropriate conversions before calculating the equilibrium constant.
Your equation isn't balanced. I would write the net ionic equation as
2CrO4^2- + 2H^+ ==> Cr2O7^2- + H2O
Keq = (Cr2O7^2-)/(H^+)^2(CrO4^2-)^2
If you want to keep your equation molecular I would balance it this way.
2K2CrO4 + 2HCl ==> K2Cr2O7 + H2O + 2KCl