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Reaction between water and chromium metal

  • Thread starter izen
  • Start date
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Hi there,

How to write the reaction between water and chromium metal under standard (i) acid and (ii) base condition?



Cr + 3H2O ----> Cr(OH)3 + 3e- + 3 H+ (acid condition)

basic solution ???


Please help
 

Borek

Mentor
28,094
2,614
In acid I would start with Cr and H+, yielding Cr3+.

Cr(OH)3 is a correct product for alkaline solution, and I would assume OH- to be one of the reactants.

In reality Cr is passivated by oxides, so its reactions are not that simple.
 
51
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thanks
 

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