For 10 points, name this state where the forward and reverse rates of a chemical reaction are the same.
Solutions containing Grignard reagents may exhibit one type of this state named for Schlenk. The variation with temperature of this condition's governing constant is described by the van't Hoff equation, and the law of mass action describes solutions in this state.(*) Closed, unconstrained systems at constant temperature and pressure have the minimum Gibbs free energy in this state, which shifts to counteract changes in temperature, volume, or partial pressure by Le Chatelier's Principle. For 10 points, name this state where the forward and reverse rates of a chemical reaction are the same.
Solutions containing Grignard reagents may exhibit one type of this state named for Schlenk.
Chemical {Equilibrium} [or {equilibrium} constant]