The values for the enthalpy of reaction are given for two reactions below
Mg(s) + Na 2CO3(s) → 2 Na(s) + MgCO 3(s) ΔH rxn = 317.1 kJ
Mg(s) + 2 NaF(s) → 2 Na(s) + MgF 2(s) ΔH rxn = 35.6 kJ
Based on this information, what is the value for ΔH rxn for the reaction
MgCO3(s) + 2 NaF(s) → Na 2CO3(s) + MgF2(s)
a. + 352.7 kJ
b. + 281.5 kJ
c. + 245.9 kJ
d. - 281.5 kJ
e. - 352.7 kJ
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