Use the ?H° f information provided to calculate ?H° rxn for the following: ?H° f (kJ/mol) SO 2 Cl 2 (g)+ 2 H 2 O(l)? 2 HCl(g)+ H 2 SO4(l)

?H° rxn = ?

SO 2 Cl 2 (g)-364
H 2 O(l)-286
HCl(g)-92
H 2 SO 4 (l)-814

A) -256 kJ
B) +161 kJ
C) -62 kJ
D) +800. kJ
E) -422 kJ

Question

Use the ?H° f information provided to calculate ?H° rxn for the following: ?H° f (kJ/mol) SO 2 Cl 2 (g)+ 2 H 2 O(l)? 2 HCl(g)+ H 2 SO4(l)

?H° rxn = ?

SO 2 Cl 2 (g)-364
H 2 O(l)-286
HCl(g)-92
H 2 SO 4 (l)-814

A) -256 kJ
B) +161 kJ
C) -62 kJ
D) +800. kJ
E) -422 kJ

Quizplus · Accepted Answer

Using the ΔH°S1U1B1f values provided, we can calculate the enthalpy change for the reaction:
ΔH°S1U1B1rxnS1U1B0 = [2(-92 kJ/mol) + (-814 kJ/mol)] - [(-364 kJ/mol) + 2(-286 kJ/mol)] = -62 kJ/mol

Therefore, the best choice is C.

Use the ?H°f Information Provided to Calculate ?H°rxn for the Following

Use the ?H°_f Information Provided to Calculate ?H°_rxn for the Following