Consider the chemical equations for the given reactions. Use the standard enthalpies of formation to calculate the changes in the standard enthalpies of formation to calculate the changes in the standard enthalpies of reaction. (a) NaOH (aq) + HNO3 (aq) ⟶ NaNO3 (aq) + H2O (l)

ΔH°rxn = Answer
kJ

(b) NaOH (aq) + NH4NO3 (aq) ⟶ NaNO3 (aq) + NH3 (aq) + H2O (l)

ΔH°rxn = Answer
kJ

(c) HNO3 (aq) + NH3 (aq) ⟶ NH4NO3 (aq)

ΔH°rxn = Answer
kJ