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Sustainable green chemistry :red_flag: (Methods (Electroplating (Electrode…
Sustainable green chemistry
:red_flag:
Methods
Painting
Paint over the metal with paint.
Electroplating
Electrode
Metal wires/ plate
Electrolyte
Molten metal or aqueous solution of ionic compound
Electrolysis
Process of passing electricity to bring chemical changes
Anode
electrode connected to the positive terminal of the battery
Cathode
Electrode connected to the negative terminal of the battery
Galvanisation
Sacrificial protection
It uses a less/more reactive metal to paint over the metal. So when the protective metal reacts with oxygen and water, it sacrifies itself to protect the metal on the inside.
Catalysts
It is used to speed up a chemical reaction without itself being consumed.
Global conext: Globalisation & sustainablity
Types of reactions
Redox
Reduction
Reduction is a gain of electrons.
Oxidation
Oxidation is a loss of electrons.
Heat of Combustion
Endothermic reaction
Reaction that absorbs energy.
Exothermic
Reaction that release energy and heat.
Redox reaction is when oxidation and reduction happens simultaneously.