Edexcel A Level Chemistry:复习笔记6.2.3 Coloured Ions
Coloured Ions Perception of colour Most transition metal compounds appear coloured. This is because they absorb energy corresponding to certain parts of the visible?electromagnetic spectrum ...
Edexcel A Level Chemistry:复习笔记6.2.2 Transition Metal Complexes
Transition Metal Complexes Transition element ions can form complexes which consist of a?central metal ion?and?ligands A ligand is a molecule or ion that forms a co-ordinate bond with a tran...
Edexcel A Level Chemistry:复习笔记6.2.1 Transition Metals
General Properties of Transition Metals Transition metals are elements with an incomplete d-subshell that can form at least one stable ion with an incomplete d-subshell This definition disti...
Edexcel A Level Chemistry:复习笔记6.1.9 Redox Titration Calculations
Redox Titration Calculations Redox Titrations In a?titration, the concentration of a solution is determined by titrating with a solution of known concentration. In redox titrations, an?oxidi...
Edexcel A Level Chemistry:复习笔记6.1.8 Fuel Cells
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...
Edexcel A Level Chemistry:复习笔记6.1.7 Storage Cells
Storage Cells Electrochemical cells can be used as a commercial source of electrical energy Cells can be described as?primary, secondary?or?fuel cells Primary cells are?non-rechargeable?(irr...
Edexcel A Level Chemistry:复习笔记6.1.6 Disproportionation & Electrode Potential
Disproportionation & Electrode Potential A?disproportionation?reaction is where one element in a chemical is simultaneously reduced and oxidised, e.g. 2Cu+?(aq) → Cu2+?(aq) + Cu (s) Stan...
Edexcel A Level Chemistry:复习笔记6.1.5 Thermodynamics & Electrode Potential
Thermodynamic Feasibility Feasibility The?E??values of a species indicate how?easily?they can get?oxidised?or?reduced The?more?positive the value, the easier it is to reduce the species on t...
Edexcel A Level Chemistry:复习笔记6.1.4 Conventional Cell Representation
Conventional Cell Representation Conventional Representation of Cells As it is cumbersome and time-consuming to draw out every electrochemical cell in full, a system of notation is used whic...
