Why can't a double displacement reaction be a redox reaction? [closed]








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




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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