self-ionization of water
two water molecules produce a hydronium ion and a hydroxide ion by transfer of a proton
ionization constant of water, Kw
= [H3O+][OH−]= 1.0 × 10−14
defined as the negative of the common logarithm of the hydronium ion concentration, [H3O+] pH = −log [H3O+]
a solution is defined as the negative of the common logarithm of the hydroxide ion concentration, [OH−].
pOH = −log[OH−]
pH + pOH
compounds whose colors are sensitive to pH
determines the pH of a solution by measuring the voltage between the two electrodes that are placed in the solution.
the controlled addition and measurement of the amount of a solution of known concentration required to react completely with a measured amount of a solution of unknown concentration.
The point at which the two solutions used in a titration are present in chemically equivalent amounts
The point in a titration at which an indicator changes color
The solution that contains the precisely known concentration of a solute
a highly purified solid compound used to check the concentration of the known solution in a titration