Elements from the Sea
- Created by: saskialee1
- Created on: 03-06-18 12:08
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- Elements from the Sea
- transport, uses and benefits of chlorine
- iodine-thiosulfate titration
- transport, uses and benefits of chlorine
- atom economy
- oxidation and reduction
- electrolysis
- practical electrolysis techniques:- reduction occurs at the cathode- oxidation occurs at the anode
- diagram
- oxidation states
- electrolysis
- Le Chatelier's Principlethe system opposes change- increase reactants or decrease products = equilibrium shifts to the products- decrease reactants or increase products = equilibrium shifts to the reactants
- chemical equilibria
- dynamic equilibrium:the rate of the forward reaction is equal to the rate of the reverse reaction - concentrations do not change
- the composition of an equilibrium mixture will always adjust to keep Kc constant
- equilibrium constant, Kc
- chemical equilibria
- hydrogen halides
- reactions with sulfuric acid:- HF and HCl = no reaction- HBr = sulfur dioxide produced- HI = hydrogen sulfide produced
- thermal stability decreases down group 7
- reaction with ammonia to form ammonium halides
- preparation - HCL and HF - sodium halide and sulfuric acid- HBr and HI - sodium halide and phosphoric acid
- acidity:- HCl, HBr, HI strongly acidic- HF weakly acidic
- reaction of halides with silver nitrate to form silver halides
- the p-block - group 7
- halogens dissolved in water
- displacement reactions
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