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Chapter-7-questions

# Chapter-7-questions - For the following reaction 2 H2(g...

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For the following reaction: 2 H 2 (g) + O 2 (g) 2 H 2 O(l) ∆Hº = -572 kJ What is the work associated with this reaction at 25ºC? 1. 7.4 kJ 2. -7.4 kJ 3. 5.0 kJ 4. -5.0 kJ 5. 2.5 kJ

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The figure below shows the cooling curve for water. It traces the changes in temperature as water, initially at 20 o C, is gradually cooled to produce ice at -20 o C. When the water freezes, 1. the temperature stays constant at 0 o C, thus the process is neither endothermic nor exothermic. 2. the process is endothermic. 3. the process is exothermic.
q P = 250 kJ V 2 = 0.110 m 3 P = 1x10 5 Pa T = 300 K Determine H and U for the reaction and conditions depicted below.

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Chapter-7-questions - For the following reaction 2 H2(g...

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