Homework Answers
A) ∆H° = total enthalpy of formation of products - enthalpy of formation of reactants
∆H°= ( -239.66-167.2)-(-411.2)
=> 4.34 kJ/mol
B) ∆S° = 56.5+60.25-72.13 => 44.62 J/mol-k
C) ∆G° =( -131.2-261.87) - (-384.1)
= -8.97 kJ/mol
D) as ∆G° is negative , it is spontaneous reaction.
Add Answer to:
2) One of the reactions for today's class was the dissolution of solid sodium chloride. NaCl...
Activity 3 Part 3 3A) Given: S'(NaCl, s) S°(Nat, aq) S°(CT, aq) = 72.1 J/(K mol)...
Activity 3 Part 3 3A) Given: S'(NaCl, s) S°(Nat, aq) S°(CT, aq) = 72.1 J/(K mol) = 58.45 JK -56.6 J/(K mol) Find As for the dissolution process: NaCl(s) → Nat(aq) + CH(aq) 3B) To calculate ASSURR, start by finding AH' for this reaction using these standard enthalpies of formation and the formula given on the previous page. Given: AH (NaCl,s) = -411.2 kJ/mol AH (CT, aq) - -167.1 kJ/mol AH (Nat, aq) - -240.34 kJ/mol -AH Now, use the...
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...
- 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...
NaCl=20.9 C KCl=20.4 C CaCl2=20.4 C III. Calculations Given the following thermodynamic data, calculate AHⓇ, AS,...
NaCl=20.9 C
KCl=20.4 C
CaCl2=20.4 C
III. Calculations Given the following thermodynamic data, 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. NaCl (s) KCI (s) CaCl2 (s) Na* (aq) Ca2+ (aq) Cl(aq) K+ (aq) AH° (kJ/mol) Sº (J/mol K) 411. 1 7 2.12 -436.7 82 -795.4 108.4 -239.66 60.2 -542.8 -53.1 -167.46 55.1 -251.2 103 PROCEDURE Part 1. Dissolution of Salts In...
2. Lastly, use the table of thermodynamic functions to compute the AHo and ASo for the...
2. Lastly, use the table of thermodynamic functions to compute the AHo and ASo for the reactions in #1. Then using AH° and AS° and your knowledge of the second law, compute which reactions are spontaneous under standard conditions. You must show all your calcualtions. (7pts) Spontaneous ASo ASuniv ΔΗ Reaction 2H2(g) + 02(g) 2H20() CO2(s)-CO2(g) K (aq)+ Cl (aq)- KCI(s) Thermodynamic Properties at 298 K AH AG Substance kJ/mol kJ/mol 3/(mol-K) Ag(s) Ag (aq) AgBr(s) AgCls) Agl(s) Cl:(g) CI(8)...
Enthalpy of Hydration: Data Sheet Show all your work clearly and include appropriate units A: Dissolution of Anhydrous Sodium Acetate Name . 8142 lo g . 235 11-35 aa.3 Mass of water Mass o...
Enthalpy of Hydration: Data Sheet Show all your work clearly and include appropriate units A: Dissolution of Anhydrous Sodium Acetate Name . 8142 lo g . 235 11-35 aa.3 Mass of water Mass of NaC,H302 Mass of solution Room Temperature Final Temperature Specific heat capacity of the solution 4.18VeC Calculations for q soution q solution d reaction B. Dissolution of Sodium Acetate Trihydrate cigh bot 1.412 Mass of water Mass of NaC2H3O 3H2O Mass of solution Room Temperature Final Te...
(7 pts.) Calculate the heat absorbed when 4.20 g of H2 are produced according to the...
(7 pts.) Calculate the heat absorbed when 4.20 g of H2 are produced according to the following equation. CH3OH (g) → CO(g) + 2 H2(g) AH = 90.2 kJ (7 pts.) When one adds 1.475 kJ of heat energy to a sample of gold, the temperature goes from 12.5 °C to 84.6 °C. Calculate the mass of the sample of gold. Gold has a specific heat capacity of 0.129 J/g.°C. (6 pts.) 10. Write the thermochemical equation for the standard...
Activity 3 Part 3 3A) Given: S'(NaCl, s) S°(Nat, aq) S°(CT, aq) = 72.1 J/(K mol) = 58.45 JK -56.6 J/(K mol) Find As for the dissolution process: NaCl(s) → Nat(aq) + CH(aq) 3B) To calculate ASSURR, start by finding AH' for this reaction using these standard enthalpies of formation and the formula given on the previous page. Given: AH (NaCl,s) = -411.2 kJ/mol AH (CT, aq) - -167.1 kJ/mol AH (Nat, aq) - -240.34 kJ/mol -AH Now, use the...
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...
- 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...
NaCl=20.9 C
KCl=20.4 C
CaCl2=20.4 C
III. Calculations Given the following thermodynamic data, 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. NaCl (s) KCI (s) CaCl2 (s) Na* (aq) Ca2+ (aq) Cl(aq) K+ (aq) AH° (kJ/mol) Sº (J/mol K) 411. 1 7 2.12 -436.7 82 -795.4 108.4 -239.66 60.2 -542.8 -53.1 -167.46 55.1 -251.2 103 PROCEDURE Part 1. Dissolution of Salts In...
2. Lastly, use the table of thermodynamic functions to compute the AHo and ASo for the reactions in #1. Then using AH° and AS° and your knowledge of the second law, compute which reactions are spontaneous under standard conditions. You must show all your calcualtions. (7pts) Spontaneous ASo ASuniv ΔΗ Reaction 2H2(g) + 02(g) 2H20() CO2(s)-CO2(g) K (aq)+ Cl (aq)- KCI(s) Thermodynamic Properties at 298 K AH AG Substance kJ/mol kJ/mol 3/(mol-K) Ag(s) Ag (aq) AgBr(s) AgCls) Agl(s) Cl:(g) CI(8)...
Enthalpy of Hydration: Data Sheet Show all your work clearly and include appropriate units A: Dissolution of Anhydrous Sodium Acetate Name . 8142 lo g . 235 11-35 aa.3 Mass of water Mass of NaC,H302 Mass of solution Room Temperature Final Temperature Specific heat capacity of the solution 4.18VeC Calculations for q soution q solution d reaction B. Dissolution of Sodium Acetate Trihydrate cigh bot 1.412 Mass of water Mass of NaC2H3O 3H2O Mass of solution Room Temperature Final Te...
(7 pts.) Calculate the heat absorbed when 4.20 g of H2 are produced according to the following equation. CH3OH (g) → CO(g) + 2 H2(g) AH = 90.2 kJ (7 pts.) When one adds 1.475 kJ of heat energy to a sample of gold, the temperature goes from 12.5 °C to 84.6 °C. Calculate the mass of the sample of gold. Gold has a specific heat capacity of 0.129 J/g.°C. (6 pts.) 10. Write the thermochemical equation for the standard...
Most questions answered within 3 hours.
-
Where is the error in this code sequence?
String s1 = "Hello";
String s2 = "ello";...
asked 11 months ago -
Financial data for Joel de Paris, Inc., for last year
follow:
Joel de Paris, Inc.
Balance...
asked 11 months ago -
Consider this reaction:
Al2(SO4)3 (aq)+ BaCl3
(aq) Al2Cl6 (aq)- +
3BaSO4(s) . What is the...
asked 11 months ago -
Suppose that Savneet is considering increasing her
recent random sample from 20 car rentals to 40...
asked 11 months ago -
Trucks arrive at an unloading terminal at an average rate of 120
per hour.
Trucks arrive...
asked 11 months ago -
Why are methanol and ethanol completely soluble in water while
octanol is not very little soluble....
asked 11 months ago -
A facilities manager at a university reads in a research report
that the mean amount of...
asked 11 months ago -
When the CuSO4 is rehydrated by adding water to the anhydrous
compound, is this an endothermic...
asked 11 months ago -
A ray of sunlight is passing from diamond into crown glass; the
angle of incidence is...
asked 11 months ago -
A block of mass 0.249 kg is placed on top of a light, vertical
spring of...
asked 11 months ago -
how do the kidneys compensate in the presences of acidosis
a) trigger hyperventilate
b) reserve acid...
asked 11 months ago -
Question 501 pts
The rental rate of capital to the firm increases. Which of the
following...
asked 11 months ago