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Find the Temperature at Which Kp = 42 Δ\Deltaf = 0, S° = 131

Question 50

Multiple Choice

Find the temperature at which Kp = 42.0 for the reaction H2(g) + I2(g)  Find the temperature at which K<sub>p</sub> = 42.0 for the reaction H<sub>2</sub>(g) + I<sub>2</sub>(g)    2HI(g) .[Given: at 25°C, for H<sub>2</sub>(g) ,  \Delta H°<sub>f</sub> = 0, S° = 131.0 J/mol·K; for I<sub>2</sub>(g) ,  \Delta H°<sub>f</sub> = 62.26 kJ/mol, S° = 260.6 J/mol·K; for HI(g) ,  \Delta H°<sub>f</sub> = 25.9 kJ/mol, S° = 206.3 J/mol·K; assume that  \Delta H° and  \Delta S° are independent of temperature.] A) 1040 K B) 168 K C) 539 K D) 1400 K E) 34,200 K 2HI(g) .[Given: at 25°C, for H2(g) , Δ\Deltaf = 0, S° = 131.0 J/mol·K; for I2(g) , Δ\Deltaf = 62.26 kJ/mol, S° = 260.6 J/mol·K; for HI(g) , Δ\Deltaf = 25.9 kJ/mol, S° = 206.3 J/mol·K; assume that Δ\Delta H° and Δ\Delta S° are independent of temperature.]


A) 1040 K
B) 168 K
C) 539 K
D) 1400 K
E) 34,200 K

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