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Galvanic Cell

Galvanic Cell

20. Electrochemistry / Galvanic Cell / Problem 6

Will Cr metal dissolve in 1 M HCl? If yes, write the balanced redox reaction that occurs upon dissolving the metal.

ANSWERS OPTIONS

A

6 H⁺(aq) + 2 Cr(s) + 2 e^– → 3 H₂(g) + 2 Cr³⁺(aq) + 3 e^–

B

2 H⁺(aq) + Cr(s) → H₂(g) + Cr³⁺(aq)

C

6 H⁺(aq) + 2 Cr(s) → 3 H₂(g) + 2 Cr³⁺(aq)

D

3 H⁺(aq) + Cr(s) → 2 H₂(g) + 2 Cr³⁺(aq)

E

No, Cr metal will not dissolve in 1 M HCl.

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