Practice Problems 8

# Practice Problems 8 - Δ H° f for PbO s given the...

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CHEMISTRY 1414 Spring 2011 Practice Problem Set 8 Question 1 A gas absorbs 126 kJ of heat and is compressed from an initial volume of 122 L to a final volume of 58.2 L at a constant external pressure of 775 torr. Calculate Δ E for this process. Question 2 Consider the following reaction: XeF 4 ( s ) + F 2 ( g ) Æ XeF 6 ( g ) Calculate Δ S universe for this reaction if the reaction occurs at 255 °C. Question 3 The booster rockets of the space shuttle use a mixture of aluminum and ammonium perchlorate as fuel. The reaction is: 3 Al ( s ) + 3 NH 4 ClO 4 ( s ) Æ Al 2 O 3 ( s ) + AlCl 3 ( s ) + 3 NO ( g ) + 6 H 2 O ( g ) Calculate Δ for this reaction.

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Question 4 Calculate Δ G° for the following reaction which occurs at 85 °C: CO 2 ( g ) + H 2 O ( l ) Æ C 6 H 12 O 6 ( s ) + O 2 ( g ) Question 5 Calculate the standard heat of formation
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Unformatted text preview: Δ H° f for PbO ( s ) given the following information: PbO ( s ) + CO ( g ) Æ Pb ( s ) + CO 2 ( g ) Δ H rxn = - 131.4 kJ Question 6 For the following reaction taking place at 104.0 °C, Δ S rxn = – 74.9 J/K and Δ S surroundings = – 335.2 J/K: Cl 2 O ( g ) + 3/2 O 2 ( g ) Æ 2 ClO 2 ( g ) Calculate Δ G rxn at 104.0 °C. Question 7 Determine the equilibrium constant K for a general reaction A + B Æ C + D if the value of Δ H rxn is - 287 kJ and Δ S rxn is + 388 J/K. The stoichiometric coefficients of all species involved in this reaction are one. Question 8 Calculate Δ S rxn and Δ G rxn for the reaction P 4 O 10 ( s ) + H 2 O ( l ) Æ H 3 PO 4 ( aq )...
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Practice Problems 8 - Δ H° f for PbO s given the...

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