Calculate the Standard Enthalpy of Formation of Cl-(Aq), Given the Following

question 22

Multiple Choice

Calculate the standard enthalpy of formation of Cl-(aq) , given the following thermochemical data at 1 atm, and knowing that the standard enthalpies of formation of H₂(g) and H⁺(aq) are both zero. HCl(g) → H⁺(aq) + Cl-(aq) -75.15 kJ
H₂(g) + Cl₂(g) → 2HCl(g) -184.62 kJ

• A) -167.46 kJ/mol
• B) +109.47 kJ/mol
• C) -17.16 kJ/mol
• D) +34.32 kJ/mol

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