Question

This is the equation for the formation of magnesium chloride.  

Mg(s) + 2HCl(l) → MgCl2(aq) + H2(g)
  Which are the reactants and the products in this reaction?  


A. The reactants are MgCl2 (magnesium chloride) and H2 (hydrogen); the products are Mg (magnesium) and HCl (hydrochloric acid).  

B. The reactants are MgCl2 (magnesium chloride) and HCl (hydrochloric acid); the products are Mg (magnesium) and H2 (hydrogen).
 
C. The reactants are Mg (magnesium) and H2 (hydrogen); the products are MgCl2 (magnesium chloride) and HCl (hydrochloric acid).

  D. The reactants are Mg (magnesium) and HCl (hydrochloric acid); the products are MgCl2 (magnesium chloride)and H2 (hydrogen).

Answer 1

D is the correct answer

Step-by-step explanation:

Answer 2

The reactants are those which react with each other to give the desired result.
The product is this result of reactants.
Thus, here option "D." Is correct.