How Much Energy Is Required to Form 141

question 91

Multiple Choice

How much energy is required to form 141.8 g of Cl₂,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) 2.010 × 10³ kJ
• B) 3.460 × 103 kJ
• C) 5.444 × 10³ kJ
• D) 4.02 × 10² kJ
• E) 4.25 × 10³ kJ

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