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...
或許每個留學(xué)生身邊都有這樣一位同學(xué)：不是在學(xué)CS的路上就是在轉(zhuǎn)CS的路上... 火到商科都得讓步的計算機(jī)專業(yè)，在留學(xué)圈有多“紅”呢？——不止中國留學(xué)生熱衷，全世界的優(yōu)秀高中生們都“擠破了頭”想進(jìn)CS名校。 但是正因...
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...
Effects of acid deposition Effect on materials Acid deposition?can react with metals and rocks (such as?limestone) causing buildings and statues to get damaged The impact of acid deposition can be ...
