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Lesson_19_-_Example_Solutions_-2009

Lesson_19_-_Example_Solutions_-2009 - 7 1 atm 10 1 9 ln K...

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Lesson 19 Example 19-1 The equilibrium constants K p for the reaction 2 SO 2 ( g ) + O 2 ( g ) = 2 SO 3 ( g ) are tabulated below at several temperatures: T (K) K p (atm -1 ) 800 9.1 × 10 2 850 1.7 × 10 2 900 4.2 × 10 1 950 1.0 × 10 1 a) Estimate H for this reaction b) What is the temperature at which K p = 1.0 × 10 6 atm -1 ? Solution: Van’t Hoff Equation: - = 2 1 1 c 2 c T 1 T 1 R H K K ln 1
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Lesson 19 a) mol J 189715 K 800 1 K 850 1
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Unformatted text preview: 7 . 1 atm 10 1 . 9 ln K . mol J 315 . 8 T 1 T 1 K K ln R H 1 2 1 2 2 1 1 c 2 c-=-× × =-= ∆--b) K 642 atm 10 1 . 9 atm 10 . 1 ln mol / J 189715 K . mol / J 315 . 8 K 800 1 K K ln H R T 1 T 1 1 2 1 6 1 1 c 2 c 1 2 = × ×--= ∆-=----2...
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