Split_00004 - 9.8 a e H j = 385.76 52.28 = 333.48 kJ mol ej...

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9-4 9.8 9.9 a. b. c. a. b. c. d. Δ Δ Δ Δ ± ± ± ± . . . ( ) ( ) ( ) H H H H r o f o C H Cl l f o C H g f o C H Cl l 2 2 4 2 4 2 2 4 kJ mol 1 38576 52 28 33348 = = − + = − e j e j e j Δ Δ Δ Δ ± ± ± ± . . . . ) H H H H r o f o C HCl l f o HCl g f o C H Cl (l 2 3 2 2 4 kJ mol 2 276 2 92 31 33348 3503 = + = − + = − e j e j e j b g b g Given reaction = + ⇒ − = − 1 2 38576 3503 420 79 b g b g . . . kJ mol ² ² . . Q H = = = − × = − Δ 300 mol C HCl kJ h mol kJ h kW 2 3 420 79 126 10 35 5 b g Heat is evolved. C H O CO ( ) + H O( ) 2 2 2 2 2 ( ) ( ) ± . g g g l kJ mol c o + = − 5 2 2 1299 6 Δ H The enthalpy change when 1 g-mole of C 2 H 2 (g) and 2.5 g-moles of O 2 (g) at 25 ° C and 1 atm react to form 2 g-moles of CO 2 (g) and 1 g-mole of H 2 O(l) at 25 ° C and 1 atm is -1299.6 kJ. Δ Δ Δ Δ ± ± ± ± . . . . ( ) H H H H c o f o CO g f o H O l f o C H g 2 2 2 2 Table B.1 kJ mol kJ mol = + = + − = − B 2 2 3935 28584 226 75 1299 6 e j e j e j b g b g b g b g b g ( ± ± ± . . . ( ± ± ± ± . ( . ) . . ( ) ( ) ( ) i) kJ mol kJ mol ii) kJ mol kJ mol r o f o C H g f o C H g r o c o C H g c o g c o C H g 2 6 2 2 Table B.1 2 2 2 6 Table B.1 Δ Δ Δ Δ Δ Δ Δ H H H H H H H = = = − = + = + − − = −
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