Equilibrium Constant Calculator — calculate equilibrium constant using standard chemistry formulas. Worked example with units.
Heat transfer: q = m × c × ΔT (mass × specific heat × temperature change)
Hess's Law: ΔH_rxn = Σ ΔHf(products) − Σ ΔHf(reactants)
Bond enthalpy approximation: ΔH_rxn ≈ Σ(bonds broken) − Σ(bonds formed)
Gibbs free energy: ΔG = ΔH − TΔS (spontaneous if ΔG < 0)
Standard specific heat capacities (c): Water = 4.184 J/g·°C; Iron = 0.449; Aluminium = 0.897; Copper = 0.385 J/g·°C