When magnesium reacts with hydrochloric acid, aqueous magnesium chloride and hydiogen gas are produced. Suppose

0.120gMg

reacts with

75.00g

of an aqueouls solution containiny with

HCl

in

k(J)/(m)ol

. Assume the specificly.\

Mg(s)+2HCl(D)->MgCl_(2)(aq)+H_(2)(g),\\\\Delta H_(m)=k(J)/(m)ol

\

+462kJ

\

-2423kJ

\

+321kJ

\

-388kJ

\

-462kJ

When magnesium reacts with hydrochloric acid, aqueous magnesium chlonide and hydiogen gas are produced. Suppose 0.120gMg reacts with 75.00g of an aqueous solution contain excess HCl in a calorimeter. The temperature increases by 6.03C. Calculate the bat in of with HCl in kJ/mol. Assume the specific heats of the solution and the empoy calonimeter are 4.18J/(gC ) and 64.4J/C, respectively. Mg(s)+2HCl(l)MgCl2(aq)+H2(g)Hm=?kJ/mol +462kJ 2423kJ +321kJ 388kJ 462kJ