An aqueous solution of sodium hydrogen carbonate corrodes aluminum foil quite readily. How do you explain this?


Sodium aluminate is produced. The reaction is slower than the usual $NaOH + Al$ and liberates $CO_2$.

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  • $\begingroup$ Is hydrogen produced also, like with NaOH? I guess not, but I want to make sure. $\endgroup$ – sadljkfhalskdjfh Mar 27 '16 at 10:52
  • $\begingroup$ Nope, water instead. $\endgroup$ – f p Mar 28 '16 at 18:40

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