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Homework Answers
Ans :- The Daltons Law of partial pressure is used, which states that the total pressure of a mixture of gas is equal to the sum of the partial pressure of the individual gas.
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Free Energy and Equlibrium Consider the system:...
Free Energy and Equlibrium Consider the system: A(g) = B(9) at 25°C. Assume that GºA =...
Free Energy and Equlibrium Consider the system: A(g) = B(9) at 25°C. Assume that GºA = 7012 J/mol and GºB = 12316 J/mol. Calculate the value of the equilibrium constant for this reaction. 1 pts Submit Answer Tries 0/5 A non-equilibrium mixture of 1.00 mol of A(g) (partial pressure 1.00 atm) and 1.00 mol of B(g) (partial pressure 1.00 atm) is allowed to equilibrate at 25°C. Calculate the partial pressure of A(9) at equilibrium. 1pts Submit Answer Tries 0/5 Calculate...
Free Energy and Equlibrium Consider the system: A(g) = B(9) at 25°C. Assume that GºA =...
Free Energy and Equlibrium Consider the system: A(g) = B(9) at 25°C. Assume that GºA = 8334 J/mol and GºB = 11324 J/mol. Calculate the value of the equilibrium constant for this reaction. 1 pts Submit Answer Tries 0/5 A non-equilibrium mixture of 1.00 mol of A(g) (partial pressure 1.00 atm) and 1.00 mol of B(g) (partial pressure 1.00 atm) is allowed to equilibrate at 25°C. Calculate the partial pressure of A(g) at equilibrium. 1pts Submit Answer Tries 0/5 Calculate...
Need work step by step please! Heat Capacity of a Gas at Constant Pressure A system...
Need work step by step please!
Heat Capacity of a Gas at Constant Pressure A system comprised of 1.900x100 g of C2H6(9) cools from 180.0°C to 45.0°C at a constant pressure of 2.5 atm. The molar heat capacity at constant pressure for C2H6(9) is 52.92 J K-1 mol-1. Calculate q. 1 pts Submit Answer Tries 0/5 Calculate w. 1 pts Submit Answer Tries 0/5 Calculate ΔΕ. 1pts Submit Answer Tries 0/5 Calculate ΔΗ. 1pts Submit Answer Tries 0/5
Please show all work step by step and final answer. Reference Electrodes The Eº value for...
Please show all work step by step and final
answer.
Reference Electrodes The Eº value for the following reaction is 0.446 V relative to the standard hydrogen electrode (SHE): Ag2 CrO4(s) + 24 + 2Ag(s) + Cro42 (aq) A chemist wishes to determine the concentration of Cro42- electrochemically. A cell is constructed consisting of a saturated calomel electrode (SCE; which has a reduction potential of 0.242 V relative to the SHE) and a silver wire coated with Ag Cro4 and...
Please show work step by step Consider the following reaction: 2 C2H6(9) + 7 02(9) —...
Please show work step by step
Consider the following reaction: 2 C2H6(9) + 7 02(9) — 4 CO2(g) + 6H2O(1) 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(9) is burned in excess oxygen. Answer to 4 sig figs. Assume standard conditions. Note that, by convention, a decrease in enthalpy of the system will result in a positive quantity of heat being...
Please show all work step by step and final answer. Electrochemical Measurement of Concentration An electrochemical...
Please show all work step by step and final
answer.
Electrochemical Measurement of Concentration An electrochemical cell consists of a standard hydrogen electrode and a copper metal electrode. What is the potential of this cell at 25°C if the copper electrode is placed in a solution in which [Cu2+] = 3.6x10-4 M? 1 pts Submit Answer Tries 0/5 The copper electrode of the above cell is placed in a solution of unknown [Cu2+]. The measured potential at 25°C is 0.136...
I keep getting the answer for total pressure incorrect? Three glass bulbs, joined by closed stopcocks,...
I keep getting the answer for
total pressure incorrect?
Three glass bulbs, joined by closed stopcocks, have the following volumes and initial pressures of the specified gases. Bulb A: 200. mL of CO2(g) at 570. torr Bulb B: 400. mL of Kr(g) at 0.500 atm Bulb C: 1.00 L of H2(9) at 101.325 kPa After both stopcocks are opened and the gases allowed to diffuse throughout, what will be the final total pressure? Ptotal- 1pts Submit Answer Incorrect. Tries 2/5...
Please show all work step by step and final answer. Nernst Equation Applied to Half-Reactions The...
Please show all work step by step and final
answer.
Nernst Equation Applied to Half-Reactions The Nernst equation can be applied to half-reactions. Calculate the reduction potential (at 25°C) of the half-cell Cu/Cu2+ (1.8x10- M). (The half-reaction is Cu2+ + 2e Cu.) 1 pts Submit Answer Tries 0/5 Calculate the reduction potential (at 25°C) of the half-cell Mn04 (2.00x10-1 M) Mn2+ (2.50X10-2 M) at pH = 4.00. (The half-reaction is MnO4 + 8H+ + 5e Mn2+ + 4H20.) 1pts Submit...
Heat Capacity of a Gas at Constant Pressure A system comprised of 5.500x101 g of Ar(g)...
Heat Capacity of a Gas at Constant Pressure A system comprised of 5.500x101 g of Ar(g) cools from 165.0°C to 30.0°C at a constant pressure of 3.0 atm. The molar heat capacity at constant pressure for Ar(g) is 20.80 J K-1 mol-1. Calculate q. 1pts Submit Answer Tries 0/5 Calculate w 1pts Submit Answer Tries 0/5 Calculate ΔΕ. 1 pts Submit Answer Tries 0/5 Calculate ΔΗ. 1pts Submit Answer Tries 0/5
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"...
Free Energy and Equlibrium Consider the system: A(g) = B(9) at 25°C. Assume that GºA = 7012 J/mol and GºB = 12316 J/mol. Calculate the value of the equilibrium constant for this reaction. 1 pts Submit Answer Tries 0/5 A non-equilibrium mixture of 1.00 mol of A(g) (partial pressure 1.00 atm) and 1.00 mol of B(g) (partial pressure 1.00 atm) is allowed to equilibrate at 25°C. Calculate the partial pressure of A(9) at equilibrium. 1pts Submit Answer Tries 0/5 Calculate...
Free Energy and Equlibrium Consider the system: A(g) = B(9) at 25°C. Assume that GºA = 8334 J/mol and GºB = 11324 J/mol. Calculate the value of the equilibrium constant for this reaction. 1 pts Submit Answer Tries 0/5 A non-equilibrium mixture of 1.00 mol of A(g) (partial pressure 1.00 atm) and 1.00 mol of B(g) (partial pressure 1.00 atm) is allowed to equilibrate at 25°C. Calculate the partial pressure of A(g) at equilibrium. 1pts Submit Answer Tries 0/5 Calculate...
Need work step by step please!
Heat Capacity of a Gas at Constant Pressure A system comprised of 1.900x100 g of C2H6(9) cools from 180.0°C to 45.0°C at a constant pressure of 2.5 atm. The molar heat capacity at constant pressure for C2H6(9) is 52.92 J K-1 mol-1. Calculate q. 1 pts Submit Answer Tries 0/5 Calculate w. 1 pts Submit Answer Tries 0/5 Calculate ΔΕ. 1pts Submit Answer Tries 0/5 Calculate ΔΗ. 1pts Submit Answer Tries 0/5
Please show all work step by step and final
answer.
Reference Electrodes The Eº value for the following reaction is 0.446 V relative to the standard hydrogen electrode (SHE): Ag2 CrO4(s) + 24 + 2Ag(s) + Cro42 (aq) A chemist wishes to determine the concentration of Cro42- electrochemically. A cell is constructed consisting of a saturated calomel electrode (SCE; which has a reduction potential of 0.242 V relative to the SHE) and a silver wire coated with Ag Cro4 and...
Please show work step by step
Consider the following reaction: 2 C2H6(9) + 7 02(9) — 4 CO2(g) + 6H2O(1) 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(9) is burned in excess oxygen. Answer to 4 sig figs. Assume standard conditions. Note that, by convention, a decrease in enthalpy of the system will result in a positive quantity of heat being...
Please show all work step by step and final
answer.
Electrochemical Measurement of Concentration An electrochemical cell consists of a standard hydrogen electrode and a copper metal electrode. What is the potential of this cell at 25°C if the copper electrode is placed in a solution in which [Cu2+] = 3.6x10-4 M? 1 pts Submit Answer Tries 0/5 The copper electrode of the above cell is placed in a solution of unknown [Cu2+]. The measured potential at 25°C is 0.136...
I keep getting the answer for
total pressure incorrect?
Three glass bulbs, joined by closed stopcocks, have the following volumes and initial pressures of the specified gases. Bulb A: 200. mL of CO2(g) at 570. torr Bulb B: 400. mL of Kr(g) at 0.500 atm Bulb C: 1.00 L of H2(9) at 101.325 kPa After both stopcocks are opened and the gases allowed to diffuse throughout, what will be the final total pressure? Ptotal- 1pts Submit Answer Incorrect. Tries 2/5...
Please show all work step by step and final
answer.
Nernst Equation Applied to Half-Reactions The Nernst equation can be applied to half-reactions. Calculate the reduction potential (at 25°C) of the half-cell Cu/Cu2+ (1.8x10- M). (The half-reaction is Cu2+ + 2e Cu.) 1 pts Submit Answer Tries 0/5 Calculate the reduction potential (at 25°C) of the half-cell Mn04 (2.00x10-1 M) Mn2+ (2.50X10-2 M) at pH = 4.00. (The half-reaction is MnO4 + 8H+ + 5e Mn2+ + 4H20.) 1pts Submit...
Heat Capacity of a Gas at Constant Pressure A system comprised of 5.500x101 g of Ar(g) cools from 165.0°C to 30.0°C at a constant pressure of 3.0 atm. The molar heat capacity at constant pressure for Ar(g) is 20.80 J K-1 mol-1. Calculate q. 1pts Submit Answer Tries 0/5 Calculate w 1pts Submit Answer Tries 0/5 Calculate ΔΕ. 1 pts Submit Answer Tries 0/5 Calculate ΔΗ. 1pts Submit Answer Tries 0/5
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"...
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