Reaction with Oxygen Oxide Formation The period 3 elements, excluding chlorine and argon, combine with oxygen to form oxides The oxide formed will contain the elements in their highest oxida...
Acid & Basic Buffers A?buffer solution?is a solution which resists changes in pH when small amounts of acids or alkalis are added A buffer solution is used to keep the pH almost constant...
pH Curves During a titration a pH meter can be used and a pH curve plotted A pH curve is a graph showing how the pH of a solution changes as the acid (or base) is added The result is charact...
Titrations Volumetric analysis?is a process that uses the volume and concentration of one chemical reactant (a standard solution) to determine the concentration of another unknown solution T...
pK? The range of values of?Ka?is very large and for weak acids, the values themselves are very small numbers Table of?Ka?values For this reason it is easier to work with another term ...
The Ionic Product of Water In all aqueous solutions, an equilibrium exists in water where a few water molecules dissociate into protons and hydroxide ions We can derive an equilibrium consta...
pH & [H?] The acidity of an aqueous solution depends on the number of?H+?(H3O+) ions in solution The?pH?is defined as: pH = -log[H+] where [H+] is the concentration of hydrogen ions in m...
Fuel Cells A fuel cell is an electrochemical cell in which a fuel?donates?electrons at one electrode and oxygen?gains?electrons at the other electrode These cells are becoming more common in...
Lithium Cells Lithium ion cells power the laptop or mobile device you are probably reading this on The Noble Prize for Chemistry in 2019 was awarded to John B. Goodenough, M. Stanley Whittin...
