Calculate The $\Delta$ H $\degree$ _rxn for the Following Reaction $\Delta$ H $\degree$ _f [SiO₂(s)] = -910

question 60

Multiple Choice

Calculate the $\Delta$ H $\degree$ _rxn for the following reaction. ( $\Delta$ H $\degree$ _f [SiO₂(s) ] = -910.9 kJ/mol; $\Delta$ H $\degree$ _f [SiCl₄(g) ] = -657.0 kJ/mol; $\Delta$ H $\degree$ _f [HCl(g) ] = -92.3 kJ/mol; $\Delta$ H $\degree$ _f [H₂O (g) ] = -241.8 kJ/mol)

• A) -139.5 kJ
• B) -137.4 kJ
• C) -104.4 kJ
• D) 104.4 kJ
• E) 139.5 kJ

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