9.5 – Electrolytic Cells Electrolysis is used to isolate highly reactive metals, such as sodium and potassium, which would not react in a voltaic cell, but require electrical energy for the reaction to occur. The reactions taking place here are non-spontaneous. 9.5.1...
9.3 – Reactivity 9.3.1 - Deduce a reactivity series based on the chemical behaviour of a groups of oxidising and reducing agents When a metal is replaced by another metal in a compound, this is called a metal displacement reaction. For this to occur, the metal in the...
9.4 – Voltaic Cells 9.4.1 - Explain how a redox reaction is used to produce electricity in a voltaic cell In a half-cell, a metal electrode is placed in an aqueous solution of its ions. Two half cells are connected to form a voltaic cell, allowing electrons to flow...
9.2 – Redox Equations 9.2.1 - Deduce simple oxidation and reduction half-equations given the species involved in a redox reaction The half equations break up the whole equation to show what is happening with each element or molecule. Since one element or...
9.1 – Introduction to Oxidation and Reduction 9.1.1 - Define oxidation and reduction in terms of electron loss and gain Oxidation – The loss of electrons from a substance. This may happen through the gain of oxygen or loss of hydrogen Reduction – The gain of...