REDOX
- Created by: Nataliagx
- Created on: 31-01-19 10:19
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- Oxidation & Reduction
- OXIDATION
- LOSS of electron
- GAIN of oxygen
- OXIDISING AGENT
- substance which OXIDISES something else
- GIVES OXYGEN to another substance
- REMOVES HYDROGEN
- potassium dichromate
- dilute sulphuric acid
- TAKES ELECTRONS from other substances
- GAINS ELECTRONS
- oxidising agents are REDUCED
- GAINS ELECTRONS
- LOSS of hydrogen
- REDUCTION
- GAIN electron
- LOSS of oxygen
- REDUCING AGENT
- REDUCES another substance
- REMOVES OXYGEN from another substance
- ADDS HYDROGEN
- NaBH4
- GIVES ELECTRONS to other substances
- LOSES ELECTRONS
- reducing agents are OXIDISED
- LOSES ELECTRONS
- GAIN of hydrogen
- OXIDATION STATE
- total no. electrons removed from an element to get to its present state.
- OX: increase in oxidation state
- OXIDATION
- LOSS of electron
- GAIN of oxygen
- OXIDISING AGENT
- substance which OXIDISES something else
- GIVES OXYGEN to another substance
- REMOVES HYDROGEN
- potassium dichromate
- dilute sulphuric acid
- TAKES ELECTRONS from other substances
- GAINS ELECTRONS
- oxidising agents are REDUCED
- GAINS ELECTRONS
- LOSS of hydrogen
- OXIDATION
- RED: decrease in oxidation state
- REDUCTION
- GAIN electron
- LOSS of oxygen
- REDUCING AGENT
- REDUCES another substance
- REMOVES OXYGEN from another substance
- ADDS HYDROGEN
- NaBH4
- GIVES ELECTRONS to other substances
- LOSES ELECTRONS
- reducing agents are OXIDISED
- LOSES ELECTRONS
- GAIN of hydrogen
- REDUCTION
- RULES
- element= 0
- sum of compound = 0
- sum of ion = charge of ion
- the most electronegative element= negative ox state
- the least electronegative element= positive ox state
- group 1= +1
- group 2 = +2
- oxygen= -2, unless in peroxide= -1
- Cl & Fl = -1 but Cl changes
- H= +1 unless metal hydrides= -1
- when an oxidation state changes by 1 = 1 electron has been transferred
- If an oxidation state falls by 2 = gained 2 electrons.
- REDUCED
- another substance has lost 2 electrons
- OXIDISED
- If an oxidation state falls by 2 = gained 2 electrons.
- OX: increase in oxidation state
- total no. electrons removed from an element to get to its present state.
- disproportionation
- where a single substance is both oxidised and reduced.
- OXIDATION
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