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What Chemical Equation Represents the Best Method for Obtaining Pure

Question 6

Multiple Choice

What chemical equation represents the best method for obtaining pure chromium?


A) FeCr2O4(s) + 4 C(s) + heat → Fe(s) + 2 Cr(s) + 4 CO(g)
B) Cr2O3(s) + 2 Al(s) + heat → 2 Cr(s) + Al2O3(s)
C) Cr2O3(s) + 2 Fe(s) + heat → Fe2O3(s) + 2 Cr(s)
D) Cr2+(aq) + H2(g) → Cr(s) + 2 H+(aq)

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