12. Use the AHf information provided to calculate Horn for the following: ompoun

Question

12. Use the AHf information provided to calculate Horn for the following: ompoun So2Cl2(g) 364 H2O0) HCI(g) H2SO4) -814 -286 92 SOCl2(g) + 2 H20(A A) 100 kJ 2 HCI(g) + H2SO4(/) C) 286 kJ B)-62 kJ D)-168 kJ 13. Given the standard enthalpy changes for the reactions: S(s) + O2(g) SO2(g) Hzlg) + ½ 2(g) H2O(1) H. =285.8 kJ/mol H2(g) + S(s) H2S(g) What is the value of AH for the reaction below? 2 H2S(g) + 3 02(g) 2 H2O(l) + 2 SO2(g) H' =-296.8 kJ/mol AH. =-20.6 kJ/mol A)-603.2 kl/mol B)-562.0 kl/mol C)-1206.4 kl/mol D)-1124.0kJ/mol

Explanation / Answer

12)

we have:

Hof(SO2Cl2(g)) = -364.0 KJ/mol

Hof(H2O(l)) = -286.0 KJ/mol

Hof(HCl(g)) = -92.0 KJ/mol

Hof(H2SO4(l)) = -814.0 KJ/mol

we have the Balanced chemical equation as:

SO2Cl2(g) + 2 H2O(l) ---> 2 HCl(g) + H2SO4(l)

deltaHo rxn = 2*Hof(HCl(g)) + 1*Hof(H2SO4(l)) - 1*Hof( SO2Cl2(g)) - 2*Hof(H2O(l))

deltaHo rxn = 2*(-92.0) + 1*(-814.0) - 1*(-364.0) - 2*(-286.0)

deltaHo rxn = -62 KJ

Answer: B

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