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A 350-Mol Sample of HI Is Placed in a 1

Question 24

Multiple Choice

A 3.50-mol sample of HI is placed in a 1.00-L vessel at 460°C,and the reaction system is allowed to come to equilibrium.The HI partially decomposes,forming 0.266 mol H2 and 0.266 mol I2 at equilibrium.What is the equilibrium constant Kc for the following reaction at 460°C? ½ H2(g) + ½ I2(g) A 3.50-mol sample of HI is placed in a 1.00-L vessel at 460°C,and the reaction system is allowed to come to equilibrium.The HI partially decomposes,forming 0.266 mol H<sub>2</sub> and 0.266 mol I<sub>2</sub> at equilibrium.What is the equilibrium constant K<sub>c</sub> for the following reaction at 460°C? ½ H<sub>2</sub>(g) + ½ I<sub>2</sub>(g) HI(g) A) 1.23 × 10<sup>2</sup> B) 8.10 × 10<sup>-3</sup> C) 2.40 × 10<sup>-2</sup> D) 11.1 E) 6.45 HI(g)


A) 1.23 × 102
B) 8.10 × 10-3
C) 2.40 × 10-2
D) 11.1
E) 6.45

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