Using the Following Thermochemical Data,calculate $\Delta$ H_f° of Tm₂O₃(s) $\to$ Tm₂O₃(s)+ 6HCl(g) $\quad$

question 79

Multiple Choice

Using the following thermochemical data,calculate $\Delta$ H_f° of Tm₂O₃(s) . 2TmCl₃(s) + 3H₂O(l) $\to$ Tm₂O₃(s) + 6HCl(g) $\quad$$\Delta$ H° = 388.1 kJ/mol
2Tm(s) + 3Cl₂(g) $\to$ 2TmCl₃(s) $\quad$ $\quad$ $\quad$ $\quad$ $\quad$$\Delta$ H° = -1973.2 kJ/mol
4HCl(g) + O₂(g) $\to$ 2Cl₂(g) + 2H₂O(l) $\quad$ $\quad$ $\quad$$\Delta$ H° = -202.4 kJ/mol

• A)-1888.7 kJ/mol
• B)-1787.5 kJ/mol
• C)2563.7 kJ/mol
• D)-2158.9 kJ/mol
• E)1382.7 kJ/mol

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