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Redox Reactions

Atoms have a change in oxidation state

Reduction –

GAIN in electrons
decrease in oxidation state

Oxidation –

LOSS of electrons
increase in oxidation state

example → hydrogen + fluorine

oxidation reaction – $H_{2}\rightarrow 2H^{+}+2e^{-}$

reduction reaction – $F_{2}+2e^{-}\rightarrow 2F^{-}$

$H_{2}+F_{2}+2e^{-}\rightarrow 2H^{+}+2F^{-}+2e^{-}$

$H_{2}+F_{2}\rightarrow 2HF$