How Much Energy Is Required to Decompose 800 G of PCl₃,according

question 31

Multiple Choice

How much energy is required to decompose 800 g of PCl₃,according to the reaction below? The molar mass of PCl₃ is 137.32 g/mol and may be useful. 4 PCl₃(g) → P₄(s) + 6 Cl₂(g) ΔH°_rxn = +1207 kJ

• A) 2.71 × 10³ kJ
• B) 4.53 × 103 kJ
• C) 6.72 × 10³ kJ
• D) 1.76 × 10³ kJ
• E) 5.90 × 10³ kJ

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