Which of the following is an example of a proper formation reaction?
A) 2Na(s) + Cl2(g) → 2NaCl(s)
B) 2H2(g) + O2(g) → 2H2O(ℓ)
C) Ca(s) + C(s) + 3/2 O2(g) → CaCO3(s)
D) 2Fe(s) + 3P(s) + 12O(g) → Fe2(PO4) 3
E) H2(g) + Cl2(g) → 2HCl
Correct Answer:
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