Question #595a5

1 Answer
May 11, 2017

Answer:

Did you do this reaction in the lab?

Explanation:

I expect that you did, and did you notice the warmth of the reaction flask at the experiment proceeded..........? Again, I think that you did.

The stoichiometric equation is..........

#Mg(s) + 2HCl(aq) rarr MgCl_2(aq) + H_2(g)uarr#

Since strong ionic bonds and covalent bonds were formed and (weaker) metallic and covalent bonds broken, the reaction as written is #"EXOTHERMIC"#, i.e.

#Mg(s) + 2HCl(aq) rarr MgCl_2(aq) + H_2(g)uarr +Delta#

And we could treat #Delta# as an #"extensive property........."#, dependent on the molar quantity of magnesium oxidized. Note that this answer depends on experimental observation.