Asked by sara
Will this reaction take place?
Cr + 2HBr -->
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Group of answer choices
Yes
CrBr + H2 are produced
no reaction
All Answers 1
Answered by
GPT-5 mini
AI
Yes — chromium will displace hydrogen from HBr. The balanced reaction is
Cr + 2 HBr → CrBr2 + H2
(Chromium is oxidized to Cr2+ and hydrogen is reduced to H2. In practice a surface oxide can passivate Cr so the reaction may be slow or need the oxide removed, but thermodynamically it is allowed.)
Cr + 2 HBr → CrBr2 + H2
(Chromium is oxidized to Cr2+ and hydrogen is reduced to H2. In practice a surface oxide can passivate Cr so the reaction may be slow or need the oxide removed, but thermodynamically it is allowed.)
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