Homework Answers
For the first reaction,
dS = dS(HCl)-dS(H+)-dS(Cl-) = 186.8-0-56.5 J/Kmol = 129.5 J/Kmol
For the second reaction,
dS = 2dS(NO)-dS(O2)-dS(N2) = (2 x 210.7) – 205 – 191.5 = 24.9 J/Kmol
For the third reaction,
dS = dS(C2H4) + dS(H2O) – dS(CH3CH2OH) = 219.5 + 188.7 – 160.7 J/Kmol = 247.5 J/mol
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Standard Entropy and Entropy Change of Reactions Using standard entropy values (from the appendices of your...
Standard Entropy Hydrocarbons containing halogens are very useful molecules in synthetic chemistry. Calculate Sº for th...
Standard Entropy Hydrocarbons containing halogens are very useful molecules in synthetic chemistry. Calculate Sº for the reaction product in the equation shown below if ASº for the reaction is -133.0 3 K1. C2H4(9) + Brz(9) CH2BrCH2Br(9) See appendices to your text for the needed thermodynamic data. 238.5 J/K/mol The data required is found in Appendix Four, PA 19-A21 of Zumdahl, Chemical Principles 8th ed. Submit Answer Incorrect. Tries 3/5 Previous Tries
Standard Entropy Hydrocarbons containing halogens are very useful molecules in synthetic chemistry. Calculate Sº for the...
Standard Entropy Hydrocarbons containing halogens are very useful molecules in synthetic chemistry. Calculate Sº for the reaction product in the equation shown below if Asº for the reaction is -130.0 J K-1. C2H4(9) + HCl(9) C2H5Cl(9) See appendices to your text for the needed thermodynamic data. Submit Answer Tries 0/5
Standard Entropy Hydrocarbons containing halogens are very useful molecules in synthetic chemistry. Calculate Sº for the...
Standard Entropy Hydrocarbons containing halogens are very useful molecules in synthetic chemistry. Calculate Sº for the reaction product in the equation shown below if ASº for the reaction is -133.0 3 K. C2H4(9) + Br2(g) + CH2BrCH2Br(9) See appendices to your text for the needed thermodynamic data. 238.5 J/K/mol The data required is found in Appendix Four, PA19-A21 of Zumdahl, Chemical Principles 8th ed.
Entropy and Change of State The standard enthalpy of vaporization for CHFCI2 is 242.17 J/g at...
Entropy and Change of State The standard enthalpy of vaporization for CHFCI2 is 242.17 J/g at its normal boiling point of 8.92°C. Calculate the standard entropy of vaporization (AS°vap) of CHFC12(1). Answer to the nearest 0.1 J K-1 mol-1. cf Zumdahl Chemical Principles 8th ed. sec. 10.4 pp 362-5. Submit Answer Tries 0/5
Heat Evolved During Combustion Consider the following reaction: 2 CO(g) + O2(g) 2 CO2(9) Use standard heats of formatio...
Heat Evolved During Combustion Consider the following reaction: 2 CO(g) + O2(g) 2 CO2(9) Use standard heats of formation from Zumdahl 'Chemical Principles' 8th ed. Appendix Four pp A19 - A21. How much heat is evolved when 1.071x101 moles of CO(9) is burned in excess oxygen. Answer to 4 sig figs. 1pts Submit Answer Tries 0/5 How much heat is evolved when 1.681x102 g of CO(g) is burned in excess oxygen. Answer to 4 sig figs. 1pts Submit Answer Tries...
2. Indicate whether the following reactions show an increase or decrease in entropy. 2 KClO3(s) →...
2. Indicate whether the following reactions show an increase or decrease in entropy. 2 KClO3(s) → 2KCI(s) + 302(g) on H20() → H20(5) N2(g) + 3H2(g) → NH3(g) NaCl(s) → Na+(aq) + Cl-(aq)
Need work step by step please! pH of a Buffered Solution Using tabulated Ka and Kp...
Need work step by step please!
pH of a Buffered Solution Using tabulated Ka and Kp values, calculate the pH of the following solutions. Answer to 2 decimal places. K2 & Kb values may be found in Zumdahl, Chemical Principles 8th ed. Appendix 5 Tables A5.1, A5.3. A solution containing 1.5x10-1 M HOCI and 4.4x 10-1 M NaOCI 1pts Incorrect. Tries 2/5 Previous Tries Submit Answer 1000.0 mL of solution containing 11.0 g of CH3COOH and 20.0 g of CH...
Free Energy of Reaction -- Temperature Dependence eu. 1000°C 2NH3(g) + 302(g) + 2CH4(9) DIDA →...
Free Energy of Reaction -- Temperature Dependence eu. 1000°C 2NH3(g) + 302(g) + 2CH4(9) DIDA → 2HCN(9) + 6H20(9) The above reaction is used in the industrial production of hydrogen cyanide. Consider the relevant thermodynamic data from the appendices of your text. (The tabulated values AHºf and sº are for 25°C. For the purposes of this question assume that AH° and ASº are invariant with temperature. This is not actually true but would generally be a reasonable approximation over "small"...
Need work step by step please! Standard Heat of Reaction Calculate AH° for the following reaction....
Need work step by step please!
Standard Heat of Reaction Calculate AH° for the following reaction. 2C2H6(g)+702(g) +4C02(g)+6H20(9) Use standard heats of formation from Zumdahl 'Chemical Principles' 8th ed. Appendix 4 pp A19 - A21. Submit Answer Tries 0/5
Need work step by step please! Heat Evolved During Combustion Consider the following reaction: 2 C2H6(g)7...
Need work step by step please!
Heat Evolved During Combustion Consider the following reaction: 2 C2H6(g)7 02(g) 4 CO2(g) 6H2O(I) Use standard heats of formation from Zumdahl 'Chemical Principles' 8th ed. Appendix Four pp A19 - A21 How much heat is evolved when 5.820 moles of C2H6(g) is burned in excess oxygen. Answer to 4 sig figs. 1pts Tries 0/5 Submit Answer How much heat is evolved when 1.136 moles of CO2(g) is produced from the combustion of C2H6(g) Answer...
Standard Entropy Hydrocarbons containing halogens are very useful molecules in synthetic chemistry. Calculate Sº for the reaction product in the equation shown below if ASº for the reaction is -133.0 3 K1. C2H4(9) + Brz(9) CH2BrCH2Br(9) See appendices to your text for the needed thermodynamic data. 238.5 J/K/mol The data required is found in Appendix Four, PA 19-A21 of Zumdahl, Chemical Principles 8th ed. Submit Answer Incorrect. Tries 3/5 Previous Tries
Standard Entropy Hydrocarbons containing halogens are very useful molecules in synthetic chemistry. Calculate Sº for the reaction product in the equation shown below if Asº for the reaction is -130.0 J K-1. C2H4(9) + HCl(9) C2H5Cl(9) See appendices to your text for the needed thermodynamic data. Submit Answer Tries 0/5
Standard Entropy Hydrocarbons containing halogens are very useful molecules in synthetic chemistry. Calculate Sº for the reaction product in the equation shown below if ASº for the reaction is -133.0 3 K. C2H4(9) + Br2(g) + CH2BrCH2Br(9) See appendices to your text for the needed thermodynamic data. 238.5 J/K/mol The data required is found in Appendix Four, PA19-A21 of Zumdahl, Chemical Principles 8th ed.
Entropy and Change of State The standard enthalpy of vaporization for CHFCI2 is 242.17 J/g at its normal boiling point of 8.92°C. Calculate the standard entropy of vaporization (AS°vap) of CHFC12(1). Answer to the nearest 0.1 J K-1 mol-1. cf Zumdahl Chemical Principles 8th ed. sec. 10.4 pp 362-5. Submit Answer Tries 0/5
Heat Evolved During Combustion Consider the following reaction: 2 CO(g) + O2(g) 2 CO2(9) Use standard heats of formation from Zumdahl 'Chemical Principles' 8th ed. Appendix Four pp A19 - A21. How much heat is evolved when 1.071x101 moles of CO(9) is burned in excess oxygen. Answer to 4 sig figs. 1pts Submit Answer Tries 0/5 How much heat is evolved when 1.681x102 g of CO(g) is burned in excess oxygen. Answer to 4 sig figs. 1pts Submit Answer Tries...
2. Indicate whether the following reactions show an increase or decrease in entropy. 2 KClO3(s) → 2KCI(s) + 302(g) on H20() → H20(5) N2(g) + 3H2(g) → NH3(g) NaCl(s) → Na+(aq) + Cl-(aq)
Need work step by step please!
pH of a Buffered Solution Using tabulated Ka and Kp values, calculate the pH of the following solutions. Answer to 2 decimal places. K2 & Kb values may be found in Zumdahl, Chemical Principles 8th ed. Appendix 5 Tables A5.1, A5.3. A solution containing 1.5x10-1 M HOCI and 4.4x 10-1 M NaOCI 1pts Incorrect. Tries 2/5 Previous Tries Submit Answer 1000.0 mL of solution containing 11.0 g of CH3COOH and 20.0 g of CH...
Free Energy of Reaction -- Temperature Dependence eu. 1000°C 2NH3(g) + 302(g) + 2CH4(9) DIDA → 2HCN(9) + 6H20(9) The above reaction is used in the industrial production of hydrogen cyanide. Consider the relevant thermodynamic data from the appendices of your text. (The tabulated values AHºf and sº are for 25°C. For the purposes of this question assume that AH° and ASº are invariant with temperature. This is not actually true but would generally be a reasonable approximation over "small"...
Need work step by step please!
Standard Heat of Reaction Calculate AH° for the following reaction. 2C2H6(g)+702(g) +4C02(g)+6H20(9) Use standard heats of formation from Zumdahl 'Chemical Principles' 8th ed. Appendix 4 pp A19 - A21. Submit Answer Tries 0/5
Need work step by step please!
Heat Evolved During Combustion Consider the following reaction: 2 C2H6(g)7 02(g) 4 CO2(g) 6H2O(I) Use standard heats of formation from Zumdahl 'Chemical Principles' 8th ed. Appendix Four pp A19 - A21 How much heat is evolved when 5.820 moles of C2H6(g) is burned in excess oxygen. Answer to 4 sig figs. 1pts Tries 0/5 Submit Answer How much heat is evolved when 1.136 moles of CO2(g) is produced from the combustion of C2H6(g) Answer...
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