Homologous Series Organic chemistry?is the chemistry of carbon compounds Carbon forms a vast number of compounds because it can form strong covalent bonds with itself This enables it to form long c...
Electrolytic Cells An ionic compound conducts electricity when it is molten or in solution The current causes the ionic compound to split up and form new substances. This process is called?electrol...
Voltaic Cells Voltaic (or Galvanic)?cells generate electricity from spontaneous redox reactions For example: Zn (s)? + CuSO4?(aq)→ Cu (s)? + ZnSO4?(aq) Instead of electrons being transferred direct...
The Winkler Method The?Winkler Method?is a technique used to measure dissolved oxygen in freshwater systems Dissolved oxygen is used as an indicator of the health of a water body, where higher diss...
Redox Titrations In a?titration, the concentration of a solution is determined by titrating with a solution of known concentration. In redox titrations, an?oxidizing agent?is titrated against a?red...
The Activity Series Metals can be ranked in order of reactivity -this is called the?reactivity series?or just?activity series Metals higher in reactivity can?displace?less reactive metals from thei...
Half Equations Oxidation numbers can be used to balance chemical equations Go through these steps to balance a redox equation: Write the unbalanced equation and identify the atoms which change in o...
Naming Transition Metal Compounds Transition metals?are characterized by having?variable oxidation numbers. Oxidation numbers?can be used in the names of compounds to indicate which?oxidation numbe...
Oxidizing & Reducing Agents Oxidising agent An oxidising agent?is a substance that?oxidises?another atom or ion by causing it to lose electrons An oxidising agent itself gets?reduced – gains el...
Deducing Oxidation Numbers The oxidation numbers of all other atoms in their compounds can vary By following the oxidation number rules, the oxidation number of any atom in a compound or ion can be...
Oxidation & Reduction There are three definitions of?oxidation?and?reduction? used in different branches of chemistry Oxidation?and?reduction?can be used to describe any of the following proces...
Reducing Sulfur Oxide Emissions The removal of sulfur from fossil fuels can either take place?pre-combustion?or?post-combustion The oxides of sulfur,?SO2?and?SO3, are both?acidic?and?toxic gases? S...
