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How Much Energy Is Required to Decompose 765 G of PCl3

Question 44

Multiple Choice

How much energy is required to decompose 765 g of PCl3 according to the reaction below? The molar mass of PCl3 is 137.32 g How much energy is required to decompose 765 g of PCl<sub>3</sub> according to the reaction below? The molar mass of PCl<sub>3</sub> is 137.32 g and may be useful. 4PCl<sub>3</sub>(g) → P<sub>4</sub>(s) + 6Cl<sub>2</sub>(g) H° = +1207 kJ A) 2.31 × 10<sup>3</sup> kJ B) 4.33 × 103 kJ C) 6.72 × 10<sup>3</sup> kJ D) 1.68 × 10<sup>3</sup> kJ E) 5.95 × 10<sup>3</sup> kJ and may be useful. 4PCl3(g) → P4(s) + 6Cl2(g) How much energy is required to decompose 765 g of PCl<sub>3</sub> according to the reaction below? The molar mass of PCl<sub>3</sub> is 137.32 g and may be useful. 4PCl<sub>3</sub>(g) → P<sub>4</sub>(s) + 6Cl<sub>2</sub>(g) H° = +1207 kJ A) 2.31 × 10<sup>3</sup> kJ B) 4.33 × 103 kJ C) 6.72 × 10<sup>3</sup> kJ D) 1.68 × 10<sup>3</sup> kJ E) 5.95 × 10<sup>3</sup> kJ H° = +1207 kJ


A) 2.31 × 103 kJ
B) 4.33 × 103 kJ
C) 6.72 × 103 kJ
D) 1.68 × 103 kJ
E) 5.95 × 103 kJ

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