Assigned problems _2

Assigned problems _2 - a C 2 H 6(g 7/2 O 2(g...

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Chemistry 2080 Spring 2011 Problem Set #2 - due date: Friday February 11th at 2 pm Name:________________ Lab TA Name:__________________ Lab Day/Time:______________________ 1) Calculate the standard enthalpy change for producing ethane (C 2 H 6 ) from its elements: 2C(s) + 3H 2 (g) –––––––> C 2 H 6 (g) Δ H° = ??? (In practice this reaction would be difficult to run as there would be many products) We know the standard enthalpy changes for the following combustion reactions::
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Unformatted text preview: a) C 2 H 6 (g) + 7 /2 O 2 (g) –––––> 2CO 2 (g) + 3H 2 O(l) Δ H° = – 1,559.7kJ b) C(s) + O 2 (g) ––––––> CO 2 (g) Δ H° = – 393.5kJ c) H 2 (g) + 1 /2 O 2 (g) ––––––> H 2 O(l) Δ H° = – 285.8kJ 2) Calculate the PV work done when 50.0 g of tin dissolves in excess acid at 1.00 bar and 25°C. Assume ideal gas behavior. Sn (s) + 2H + (aq) ––––––––> Sn 2+ (aq) + H 2 (g)...
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