The phase-shift method and correlation constants, i.e., the unique electrochemical impedance spectroscopy (EIS) techniques for studying the linear relationship between the behavior ($-{varphi}$ vs. E) of the phase shift ($90^{circ}{geq}-{varphi}{geq}0^{circ}$) for the optimum intermediate frequency and that ($ heta$ vs. E) of the fractional surface coverage ($0{leq}{ heta}{leq}1$), have been proposed and verified to determine the Langmuir, Frumkin, and Temkin adsorption isotherms of H and related electrode kinetic and thermodynamic parameters at noble metal (alloy)/aqueous solution interfaces. At a Zr/0.2 M ${H_2}{SO_4}$ aqueous solution interface, the Frumkin and Temkin adsorption isotherms ($ heta$ vs. E), equilibrium constants (K = $1.401{ imes}10^{-17}exp(-3.5{ heta})mol^{-1}$ for the Frumkin and K = $1.401{ imes}10^{-16}exp(8.1{ heta})mol^{-1}$ for the Temkin adsorption isotherm), interaction parameters (g = 3.5 for the Frumkin and g = 8.1 for the Temkin adsorption isotherm), rates of change of the standard free energy (r = $8.7;kJ;mol^{-1}$ for g = 3.5 and r = $20;kJ;mol^{-1}$ for g = 8.1) of H with $ heta$, and standard free energies ($96.13{leq}{Delta}G^0_{ heta}{leq}104.8;kJ;mol^{-1}$ for K = $1.401{ imes}10^{-17}exp(-3.5{ heta})mol^{-1}$ and $0{leq}{ heta}{leq}1$ and ($94.44<{Delta}G^0_{ heta}<106.5;kJ;mol^{-1}$ for K = $1.401{ imes}10^{-16}exp(-8.1{ heta})mol^{-1}$ and $0.2<{ heta}<0.8$) of H are determined using the phase-shift method and correlation constants. At 0.2 < $ heta$ < 0.8, the Temkin adsorption isotherm correlating with the Frumkin adsorption isotherm, and vice versa, is readily determined using the correlation constants. The phase-shift method and correlation constants are probably the most accurate, useful, and effective ways to determine the adsorption isotherms of H and related electrode kinetic and thermodynamic parameters at highly corrosion-resistant metal/aqueous solution interfaces.