Which of the following demonstrates that reactants and products are chemically different?

A. Zn + 2HCl -> 2HCl + Zn
B. Zn + 2HCl -> H2 + ZnCl2
C. H2O + C4H10 -> H2O + C4H10
D. C4H10 + H2O -> C4H10 + H2O

1 answer

I think this is nonsense but the answer probably is B. That's the only one of the four that doesn't have the same thing on the right that's on the left.