Empirical formula
Empirical formula
The simplest whole-number ratio of the different elements in a compound.Endothermic reaction
Endothermic reaction
A reaction that absorbs heat from the surroundings as the reaction proceeds (positive ∆H).End point
End point
The point in a titration at which the indicator changes color, showing that enough reactant has
been added to the solution to complete the reaction.
Enthalpy (H)
Enthalpy (H)
The heat content of a system at constant pressure. The change in enthalpy (∆H) in the course of
a reaction is the difference between the enthalpies of the products and the reactants.
Entropy (S)
Entropy (S)
A property related to the degree of disorder in a system. Highly ordered systems have low
entropies. The change in entropy (∆S) in the course of a reaction is the difference between the
entropies of the products and the reactants.
Equilibrium
Equilibrium
The state of balance in which the forward and reverse reaction rates are equal. In a system at