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
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.
To determine which reaction demonstrates that reactants and products are chemically different, we need to compare the chemical formulas of the reactants and products for each reaction.
A. Zn + 2HCl -> 2HCl + Zn:
In this reaction, the reactants are Zn and HCl, and the products are HCl and Zn. The chemical formulas of the reactants and products are the same, indicating that they are chemically the same.
B. Zn + 2HCl -> H2 + ZnCl2:
In this reaction, the reactants are Zn and HCl, and the products are H2 and ZnCl2. The chemical formulas of the reactants and products are different, indicating that they are chemically different. This reaction demonstrates that reactants and products can be chemically different.
C. H2O + C4H10 -> H2O + C4H10:
In this reaction, the reactants are H2O and C4H10, and the products are H2O and C4H10. The chemical formulas of the reactants and products are the same, indicating that they are chemically the same.
D. C4H10 + H2O -> C4H10 + H2O:
In this reaction, the reactants are C4H10 and H2O, and the products are C4H10 and H2O. The chemical formulas of the reactants and products are the same, indicating that they are chemically the same.
Based on the above analysis, the only reaction that demonstrates that reactants and products are chemically different is option B: Zn + 2HCl -> H2 + ZnCl2.