chem ch 19 - Chemistry, 11e (Brown/LeMay/Brusten/Murphy)...

Info iconThis preview shows pages 1–6. Sign up to view the full content.

View Full Document Right Arrow Icon
Chemistry, 11e (Brown/LeMay/Brusten/Murphy) Chapter 19: Chemical Thermodynamics 19.1 Multiple-Choice and Bimodal Questions Use the table below to answer the questions that follow. 1) The value of S ∆ ° for the catalytic hydrogenation of acetylene to ethene, 2 2 2 2 4 C H (g) H (g) C H (g) + is __________ J/K∙ mol. A) +18.6 B) +550.8 C) +112.0 D) -112.0 E) -18.6 Answer: D Diff: 3 Page Ref: Sec. 19.4
Background image of page 1

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Chemistry, 11e (Brown/LeMay/Brusten/Murphy) Chapter 19: Chemical Thermodynamics 2) The combustion of acetylene in the presence of excess oxygen yields carbon dioxide and water: 2 2 2 2 2 2C H (g) 5O 4CO (g) 2H O(l) + + The value of S ∆ ° for this reaction is __________ J/K∙ mol. A) +689.3 B) +122.3 C) +432.4 D) -122.3 E) -432.4 Answer: E Diff: 3 Page Ref: Sec. 19.4 3) The value of S ∆ ° for the reaction 2 2C(s,diamond) O (g) 2CO(g) + is __________ J/K∙ mol. A) -185.9 B) +185.9 C) -9.5 D) +9.5 E) -195.7 Answer: B Diff: 3 Page Ref: Sec. 19.4
Background image of page 2
Chemistry, 11e (Brown/LeMay/Brusten/Murphy) Chapter 19: Chemical Thermodynamics 4) The value of S ∆ ° for the catalytic hydrogenation of ethene to ethane, 2 4 2 2 6 C H (g) H (g) C H (g) + is __________ J/K∙ mol. A) -101.9 B) -120.5 C) -232.5 D) +112.0 E) +101.9 Answer: B Diff: 3 Page Ref: Sec. 19.4 5) The value of S ∆ ° for the catalytic hydrogenation of acetylene to ethane 2 2 2 2 6 C H (g) 2H (g) C H (g) + is __________ J/K∙ mol. A) -76.0 B) +440.9 C) -232.5 D) +232.5 E) +28.7 Answer: C Diff: 3 Page Ref: Sec. 19.4
Background image of page 3

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Chemistry, 11e (Brown/LeMay/Brusten/Murphy) Chapter 19: Chemical Thermodynamics 6) The value of S ∆ ° for the oxidation of carbon to carbon monoxide, 2 2C(s,graphite) O (g) 2CO(g) + is __________ J/K∙ mol. Carbon monoxide is produced in the combustion of carbon with limited oxygen. A) -12.8 B) +408.6 C) -408.6 D) +179.4 E) +395.8 Answer: D Diff: 3 Page Ref: Sec. 19.4 7) The value of S ∆ ° for the oxidation of carbon to carbon dioxide, 2 2 C(s,graphite) O (g) CO (g) + is __________ J/K∙ mol. The combustion of carbon, as in charcoal briquettes, in the presence of abundant oxygen produces carbon dioxide. A) +424.3 B) +205.0 C) -205.0 D) -2.9 E) +2.9 Answer: E Diff: 3 Page Ref: Sec. 19.4
Background image of page 4
Chapter 19: Chemical Thermodynamics 8) The combustion of ethene in the presence of excess oxygen yields carbon dioxide and water: 2 4 2 2 2 C H (g) 3O (g) 2CO (g) 2H O(l) + + The value of ΔS° for this reaction is __________ J/K∙ mol. A) -267.4 B) -140.9 C) -347.6 D) +347.6 E) +140.9 Answer: A Diff: 3 Page Ref: Sec. 19.4 9) The combustion of ethane in the presence of excess oxygen yields carbon dioxide and water: 2 6 2 2 2 2C H (g) 7O (g) 4CO (g) 6H O(l) + + The value of S ∆ ° for this reaction is __________ J/K∙ mol. A) +718.0
Background image of page 5

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Image of page 6
This is the end of the preview. Sign up to access the rest of the document.

This note was uploaded on 08/19/2011 for the course CHEM n/a taught by Professor N/a during the Spring '11 term at Marquette.

Page1 / 51

chem ch 19 - Chemistry, 11e (Brown/LeMay/Brusten/Murphy)...

This preview shows document pages 1 - 6. Sign up to view the full document.

View Full Document Right Arrow Icon
Ask a homework question - tutors are online