Redox and oxidation states
What Redox and oxidation states means in Chemistry A-Level, as defined for OCR.
Definitions of Redox and oxidation states
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Reference: OCR
Group 2 metals act as reducing agents and are oxidised from oxidation state 0 to 2⁺ by losing two electrons, while another species is reduced.
The metal is oxidised from oxidation state 0 to 2⁺ while oxygen is reduced to the oxide ion O²⁻, so this is a redox reaction.
The metal is oxidised to a 2⁺ ion while hydrogen in water is reduced from 1⁺ to 0 in H₂.
Topics that use Redox and oxidation states
- Group 2 (OCR A-Level)
Related terms
- Acid indigestion treatment
- Atomic radius and shielding down Group 2
- Balanced symbol equations
- Formation of 2⁺ ions
- Formation of metal hydroxides and hydrogen
- Formation of metal oxides MO
- Group 2 compounds as bases
- Group 2 reactions with dilute acids
Using Redox and oxidation states in the exam
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