Why can't a double displacement reaction be a redox reaction?


closed as off-topic by Todd Minehardt, ringo, ron, Klaus-Dieter Warzecha, paracetamol Jan 24 '17 at 5:20

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Oh yes it can, especially when an element is formed. The reaction

$\ce{NaH + H_2O->NaOH + H_2}$

is a double displacement reaction in which the hydride and hydroxide ions switch partners, and also a redox reaction in which some of the hydrogen changes oxidation states.


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