Which of the given equations correctly represents the neutralization of magnesium hydroxide by hydrochloric acid? #"a. "Mg(OH)_2(s)+2HCl(aq) rarr MgCl_2(aq) + 2H_2O(l)# #"b. "Mg(OH)_2(s)+2HCl(aq) rarr MgO(s) + 2H_2(g) + Cl_2(g)# #"c. "MgO(s)+2HCl(aq)#

Which of the given equations correctly represents the neutralization of magnesium hydroxide by hydrochloric acid?

#"a. "Mg(OH)_2(s)+2HCl(aq) rarr MgCl_2(aq) + 2H_2O(l)#
#"b. "Mg(OH)_2(s)+2HCl(aq) rarr MgO(s) + 2H_2(g) + Cl_2(g)#
#"c. "MgO(s)+2HCl(aq) rarr MgCl_2(aq) + H_2O(l)#
#"d. None of the above"#

1 Answer
Aug 18, 2016

Answer:

#"Option A"#

Explanation:

We need a stoichiometric equation that represents the reaction between #Mg(OH)_2# and #HCl#, and here it is............

#Mg(OH)_2(s) + 2HCl(aq) rarr MgCl_2(aq) + 2H_2O(l)#

Here, #1# #"equiv"# of magnesium hydroxide reacts with #2# #"equiv"# hydrochloric acid. In the reaction that was performed, there were #3.0*mol# hydrochloric acid, and stoichiometric equivalence a #1/2# #"equiv"# of #"magnesium hydroxide"#, i.e. #3/2*mol#.