1.Write an equilibrium constant equation for the following reaction:
4NH3(g)+5O2(g)= 4NO(g)+6H2O(g)
2. What does the above [] mean in the above equation?
To write the equilibrium constant equation for the given reaction, you need to know the stoichiometry of the reaction. The equilibrium constant, denoted as K, is a dimensionless number that expresses the ratio of the concentrations (or pressures) of the products to the concentrations (or pressures) of the reactants, each raised to the power of their stoichiometric coefficients.
For the reaction: 4NH3(g) + 5O2(g) = 4NO(g) + 6H2O(g), the equilibrium constant equation is:
K = [NO]^4 * [H2O]^6 / [NH3]^4 * [O2]^5
The square brackets [ ] represent the concentration of the species inside them. In this case, [NO] represents the concentration of NO, [H2O] represents the concentration of H2O, [NH3] represents the concentration of NH3, and [O2] represents the concentration of O2.
The use of square brackets indicates that the values inside represent the concentration of the species in moles per liter (Molarity) when using concentrations. If using partial pressures, the concentration is represented by the symbol P (for pressure) and is given in units of pressure, such as atmospheres (atm) or pascals (Pa).