Given the reaction (1) and (2) below, determine Hr andUr for reaction (3) at 298

Question

Given the reaction (1) and (2) below, determine Hr andUr for reaction (3) at 298 K. Also determine the molarenthalpy of formation for HCl, Hm,f (HCl). Assume allgases are perfect. 1.H2 (g) + Cl2 (g) --> 2HCl(g)               Hr= -184.62 kJ 2.2H2 (g) + O2 (g) --> 2H20(l)              Hr= -483.64 kJ 3.4HCl (g) + O2(g) ---> 2Cl2 (g) +2H20 (l) I found Hr to be -114.4 kJ and Ur to be-106.97kJ. Please confirm if possible. I am confused about finding the molar enthalpy of formationfor HCl (Hm,f).  Please help. Given the reaction (1) and (2) below, determine Hr andUr for reaction (3) at 298 K. Also determine the molarenthalpy of formation for HCl, Hm,f (HCl). Assume allgases are perfect. 1.H2 (g) + Cl2 (g) --> 2HCl(g)               Hr= -184.62 kJ 2.2H2 (g) + O2 (g) --> 2H20(l)              Hr= -483.64 kJ 3.4HCl (g) + O2(g) ---> 2Cl2 (g) +2H20 (l) I found Hr to be -114.4 kJ and Ur to be-106.97kJ. Please confirm if possible. I am confused about finding the molar enthalpy of formationfor HCl (Hm,f).  Please help.

Explanation / Answer

We Know that :

     The given Reaction is :

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