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Calculate AGº for the dissolution of urea when 4.2 g of urea dissolved in 5.0 mL...
AG°= AH-TAS AG=AGº+RTinQ where R=8.314 J/mol K 1. Calculate AGº for the following reaction at 25 °C if AH°= -1854 kJ...
AG°= AH-TAS AG=AGº+RTinQ where R=8.314 J/mol K 1. Calculate AGº for the following reaction at 25 °C if AH°= -1854 kJ/mol; AS°= -236 J/mol K CH-COCH3(g) + 402(g) → 3C02(g) + 3H2O(1) 2. NH.NO, dissolving in water is a spontaneous process. As it dissolves, the temperature of the solution decreases. Based on this, what must the signs (positive or negative) of AG, AH, and AS be?
Using the thermodynamic data given in the procedure, calculate ∆H°, ∆S°, and ∆G for the dissolution...
Using the thermodynamic data given in
the procedure, calculate ∆H°, ∆S°, and
∆G for the dissolution of each salt in Part 1. Use the
initial temperature you recorded in lab for the ∆G
calculation.
Data Table 1 Salt Observations Mass of Salt (g) Volume of Water (ml) 5.0 Initial Final Temperature Temperature (°C) (°C) 1.0173 23.1 21.9 Sodium Chloride completely dissolved, slightly cooler 5.0 1.0233 22.8 15.2 Potassium Chloride completely dissolved, cold to the touch 5.0 0.9824 23.2 30.7 Calcium...
3. In a dissolution experiment, 5.0 g of NH4NOs was dissolved in 50.0 mL of water...
3. In a dissolution experiment, 5.0 g of NH4NOs was dissolved in 50.0 mL of water in a calorimeter If the calculated for the reaction was 1.7 kJ, calculate the observed Ar for the experiment. (Ignore the heat capacity of the calorimeter, i.e., use Ceup, -0. Assume the specific heat capacity of the solution = 4.18 J/g。C and the density of the water-1.0 g/mL)
This is a thermodynamics of urea dissolution lab. Temperature of water was 25.6 C Temperature of...
This is a thermodynamics of urea dissolution lab. Temperature of
water was 25.6 C Temperature of water mixed with urea was 21.7 C
Mass of 25ml of water - 24.5 g Heat capacity of water given: c:
2.184 J/g C Mass of urea is 1.5 g Calculate q and please answer the
questions above. Thanks.
1. Remember for calorimetry that sys - AH' and that you measured surr 2. Calculate AH', using the following equation: 4surr = -Asys 3. The...
MI Review | Constants 1 Periodi Consider the dissolution of AgBr in water at 25 'C:...
MI Review | Constants 1 Periodi Consider the dissolution of AgBr in water at 25 'C: AgBr(s) = Ag+ (aq) + Br-(aq) Part B Substance AH' S and State kJ/mol J/(K.mol) Ag' (aq) 105.6 72.7 Br (aq) –121.5 82.4 AgBr(s) -100.4 107.1 Calculate Ksp for AgBr at 25°C. Express your answer to two significant figures. VA ALQ O 2 ? KE Submit Request Answer Part C Calculate AG for the dissolution of AgBr at 25°C when [Ag+] = [Br") –...
10. The value of AGº for the Haber reaction, 3H2(g) + N2(g) → 2NH3(g), at 25°C...
10. The value of AGº for the Haber reaction, 3H2(g) + N2(g) → 2NH3(g), at 25°C is -32.3 kJ mor! Answer the following: a) Determine the value of Keq for the reaction at 25°C (4 points) b) The value of AH° is-92.2 kJ mor' and the value of AS is -201 J mor' K'Assuming the values of AH° and Asº do not change with temperature, determine agº for the reaction at 475°C. (4 points) c) Determine the value of Key...
- T 2 31 5 6 Using the thermodynamic data given in the procedure, calculate AH°,...
- T 2 31 5 6 Using the thermodynamic data given in the procedure, calculate AH°, AS, and AG for the dissolution of each salt in Part 1. Use the initial temperature you recorded in lab for the AG calculation. AH (kJ/ S (J/mol K) mol) Salt Observations Volume of Water (ml) 5.0 Mass of Salt (g/ Initial Final Temperature Temperature 411.1 72.12 Sodium Chloride 1.0173 23.1 219 82 NaCl) KCI (5) CaCl (s) Nat(a) 436.7 -795.4 completely dissolved slipy...
NOLUL PULS. AGº for the reaction H2(g) +12(8) = 2HI(g) is 2.60 kJ/mol at 25°C. Calculate...
NOLUL PULS. AGº for the reaction H2(g) +12(8) = 2HI(g) is 2.60 kJ/mol at 25°C. Calculate AG, and predict the direction in which the reaction is spontanec The initial pressures are: PH, = 3.70 atm P1, = 1.5 atm Ph1 = 1.75 atm AG= The reaction is spontaneous in the forward direction. The reaction is spontaneous in the reverse direction. Cannot be determined.
Question #5 In this question you will use your values from questions 2 and 3 to...
Question #5 In this question you will use your values from questions 2 and 3 to determine the value of AS° assuming the equilibrium constant, K, is equal to the concentration of urea in the saturated solution. Part 1: Determine the values of AS° in J/Kmol in both trials by assuming K = [urea). Trial #1 Trial #2 ASO J/Kmol This result is out of range. J/Kmol This result is out of range. Submit Check your answers. Part 2: Determine...
2) One of the reactions for today's class was the dissolution of solid sodium chloride. NaCl...
2) One of the reactions for today's class was the dissolution of solid sodium chloride. NaCl (s) = Nat (aq) + CI (aq) Use the data from the table to calculate: Substance NaCl (s) Nat (aq) ci" (aq) Hiº (kJ/mol) S (J/mol K) AG (kJ/mol) -411.2 72.13 -384.1 -239.66 60.25 -261.87 -167. 2 5 6.5 -131.2 229 66 1 A) AH RXN B) AS RXN C) AGⓇAXN D) The little circle which looks like the degree symbol (º) is used...
AG°= AH-TAS AG=AGº+RTinQ where R=8.314 J/mol K 1. Calculate AGº for the following reaction at 25 °C if AH°= -1854 kJ/mol; AS°= -236 J/mol K CH-COCH3(g) + 402(g) → 3C02(g) + 3H2O(1) 2. NH.NO, dissolving in water is a spontaneous process. As it dissolves, the temperature of the solution decreases. Based on this, what must the signs (positive or negative) of AG, AH, and AS be?
Using the thermodynamic data given in
the procedure, calculate ∆H°, ∆S°, and
∆G for the dissolution of each salt in Part 1. Use the
initial temperature you recorded in lab for the ∆G
calculation.
Data Table 1 Salt Observations Mass of Salt (g) Volume of Water (ml) 5.0 Initial Final Temperature Temperature (°C) (°C) 1.0173 23.1 21.9 Sodium Chloride completely dissolved, slightly cooler 5.0 1.0233 22.8 15.2 Potassium Chloride completely dissolved, cold to the touch 5.0 0.9824 23.2 30.7 Calcium...
3. In a dissolution experiment, 5.0 g of NH4NOs was dissolved in 50.0 mL of water in a calorimeter If the calculated for the reaction was 1.7 kJ, calculate the observed Ar for the experiment. (Ignore the heat capacity of the calorimeter, i.e., use Ceup, -0. Assume the specific heat capacity of the solution = 4.18 J/g。C and the density of the water-1.0 g/mL)
This is a thermodynamics of urea dissolution lab. Temperature of
water was 25.6 C Temperature of water mixed with urea was 21.7 C
Mass of 25ml of water - 24.5 g Heat capacity of water given: c:
2.184 J/g C Mass of urea is 1.5 g Calculate q and please answer the
questions above. Thanks.
1. Remember for calorimetry that sys - AH' and that you measured surr 2. Calculate AH', using the following equation: 4surr = -Asys 3. The...
MI Review | Constants 1 Periodi Consider the dissolution of AgBr in water at 25 'C: AgBr(s) = Ag+ (aq) + Br-(aq) Part B Substance AH' S and State kJ/mol J/(K.mol) Ag' (aq) 105.6 72.7 Br (aq) –121.5 82.4 AgBr(s) -100.4 107.1 Calculate Ksp for AgBr at 25°C. Express your answer to two significant figures. VA ALQ O 2 ? KE Submit Request Answer Part C Calculate AG for the dissolution of AgBr at 25°C when [Ag+] = [Br") –...
10. The value of AGº for the Haber reaction, 3H2(g) + N2(g) → 2NH3(g), at 25°C is -32.3 kJ mor! Answer the following: a) Determine the value of Keq for the reaction at 25°C (4 points) b) The value of AH° is-92.2 kJ mor' and the value of AS is -201 J mor' K'Assuming the values of AH° and Asº do not change with temperature, determine agº for the reaction at 475°C. (4 points) c) Determine the value of Key...
- T 2 31 5 6 Using the thermodynamic data given in the procedure, calculate AH°, AS, and AG for the dissolution of each salt in Part 1. Use the initial temperature you recorded in lab for the AG calculation. AH (kJ/ S (J/mol K) mol) Salt Observations Volume of Water (ml) 5.0 Mass of Salt (g/ Initial Final Temperature Temperature 411.1 72.12 Sodium Chloride 1.0173 23.1 219 82 NaCl) KCI (5) CaCl (s) Nat(a) 436.7 -795.4 completely dissolved slipy...
NOLUL PULS. AGº for the reaction H2(g) +12(8) = 2HI(g) is 2.60 kJ/mol at 25°C. Calculate AG, and predict the direction in which the reaction is spontanec The initial pressures are: PH, = 3.70 atm P1, = 1.5 atm Ph1 = 1.75 atm AG= The reaction is spontaneous in the forward direction. The reaction is spontaneous in the reverse direction. Cannot be determined.
Question #5 In this question you will use your values from questions 2 and 3 to determine the value of AS° assuming the equilibrium constant, K, is equal to the concentration of urea in the saturated solution. Part 1: Determine the values of AS° in J/Kmol in both trials by assuming K = [urea). Trial #1 Trial #2 ASO J/Kmol This result is out of range. J/Kmol This result is out of range. Submit Check your answers. Part 2: Determine...
2) One of the reactions for today's class was the dissolution of solid sodium chloride. NaCl (s) = Nat (aq) + CI (aq) Use the data from the table to calculate: Substance NaCl (s) Nat (aq) ci" (aq) Hiº (kJ/mol) S (J/mol K) AG (kJ/mol) -411.2 72.13 -384.1 -239.66 60.25 -261.87 -167. 2 5 6.5 -131.2 229 66 1 A) AH RXN B) AS RXN C) AGⓇAXN D) The little circle which looks like the degree symbol (º) is used...
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