Homework Answers
13. The thermal decomposition of aluminum oxide can be represented as follows: A1203 (s) 2 Al...
13. The thermal decomposition of aluminum oxide can be represented as follows: A1203 (s) 2 Al (s) +3/2 O2 (g) AHran 1676 KJ If aluminum is produced in this way, how many grams of aluminum Could they be formed when 1,000 x 103 KJ of heat is transferred? 13. La descomposición termal del óxido de aluminio se puede representar de la siguiente forma AlLO (s)2 Al (s)+3/2 O:(g) AHn 1676 K Si el aluminio se produce de esta forma, cuántos...
Help me please Substance S° (J/mol×K) Al (s) 28.33 Al2O3 (s) 50.92 Cl2 (g) 223.07 H2...
Help me please
Substance
S°
(J/mol×K)
Al (s)
28.33
Al2O3 (s)
50.92
Cl2 (g)
223.07
H2 (g)
130.68
N2 (g)
191.61
O2 (g)
205.14
Si (s)
18.83
SiCl4 (g)
330.73
SiHCl3 (g)
330.73
SiH2Cl2 (g)
285.71
SiH3Cl (g)
313.87
SiH4 (g)
204.62
Si3N4 (s)
101.3
SiO2 (s)
41.84
1. Predict the sign of
S°rxn for the following processes. Then calculate
S°rxn using the standard values just given.
sign of
S°rxn
S°rxn
a. SiO2 (s)
Si (s) + O2 (g)
b....
The thermochemical equation for the reaction is shown below: 4 Al(s) + 3 O2(g) → 2...
The thermochemical equation for the reaction is shown below: 4 Al(s) + 3 O2(g) → 2 Al2O3(s) ΔH = -3352 kJ How much heat is released when 12.1 g of Al react with O2(g) at 25 oC and 1 atm? Group of answer choices -3.59 × 10^5 kJ -104 kJ -1.50 × 10^3 kJ -376 kJ
The thermochemical equation for the reaction is shown below: 4 Al(s) + 3 O2(g) → 2...
The thermochemical equation for the reaction is shown below: 4 Al(s) + 3 O2(g) → 2 Al2O3(s) AH = -3352 kJ How much heat is released when 12.1 g of Al react with O2(g) at 25 °C and 1 atm? 0 - 104 kJ 0 -3.59 x 105 kJ -1.50 x 103 kJ O-376 kJ A 77.0-mL sample of a 0.203 M potassium sulfate solution is mixed with 55.0 mL of a 0.226 M lead(II) nitrate solution and this reaction...
2. Calculate the enthalpy for the reaction below at standard conditions using Appendix G in your...
2. Calculate the enthalpy for the reaction below at standard
conditions using Appendix G in your textbook. [Report the answer to
three sig fig, without unit labels, and using +/- signs to indicate
if the reaction is endo- or exothermic.] 2 Al(s) + Fe2O3(s) -->
Al2O3(s) + 2 Fe(s)
Substance AH (kJ mol-) AG; (kJ mol-1) Sº (JK-1 mol-2) aluminum 0 0 28.3 324.4 285.7 164.54 -531 -485 -321.7 Al(s) Al(g) Al3+ (aq) Al2O3(s) AlF3(s) AICI3(s) AlCl3.6H2O(s) -1676 -1582 50.92...
The following questions refer to the following reaction at 25°C and 1 atm. 2Fe(s) + (3/2)O2(g)...
The following questions refer to the following reaction at 25°C and 1 atm. 2Fe(s) + (3/2)O2(g) + 3H2O(1) ► 2Fe(OH)3(3) AH = -789 kJ/mol Substance Fe(OH)3(S) Fe(s) O2(g) H2O(1) Sº (J/mol K) 107 27 205 70 7. Determine ASgurr for the reaction (in kJ/mol K) A) 3.14 B) 0.937 C) 0.378 D) 1.31 E) 2.65 8. Determine ASuniv for the reaction (in kJ/mol K) A) 0.23 B) 2.3 C) 0.36 D) 2.8 E) 3.6
Calculate the amount of heat released in the combustion of 9 grams of Al with 2.5 grams of O2 to form Al2O3(s) at 25°C...
Calculate the amount of heat released in the combustion of 9 grams of Al with 2.5 grams of O2 to form Al2O3(s) at 25°C and 1 atm. ? HfAl2O3(s) = ? 1676 kJ/mol HINT: What does Delta ? HfAl2O3(s) mean? Enter a positive number since released implies a negative number already. Enter to 1 decimal place in kJ.
3.(15pts) In each case, find the missing AH. (kJ/mole) (a) If 2 Al(s) + Fe2O3(s) ---->...
3.(15pts) In each case, find the missing AH. (kJ/mole) (a) If 2 Al(s) + Fe2O3(s) ----> Al2O3(s) + 2 Fe(s) AH,xº = -851.5kJ/mol then 1/8 Al2O3(s) + 1/4 Fe(s) --> 1/4 Al(s) + 1/8 Fe2O3(s) AHX = ? (b) If CaO(8) + 3 C(s) --> CaC2(s) + CO(g) AH,” = 464,8 kJ/mol then 6 CaO(s) + 18 C(s) ---> 6 CaCz(s) +6 CO(g) AHX = ? (c) If N2(g) + 2 O2(g) ---> N204(g) and 2 NO2(g) ----> N2(g) +...
Given the unbalanced reaction of Al(s) + O2 (g) ---> Al2O3 (s), determine which reagent, and...
Given the unbalanced reaction of Al(s) + O2 (g) ---> Al2O3 (s), determine which reagent, and how much will be left over after the reaction of 5.0 mol of Al (s) with 4.0 mol of O2 (g).
1) What is the ΔrG° for the following reaction (in kJ mol-1)? 2 Al (s) +...
1) What is the ΔrG° for the following reaction (in kJ mol-1)? 2 Al (s) + Fe2O3 (s) ⇌ Al2O3 (s) + 2 Fe (s) 2) What is the ΔrG° for the following reaction (in kJ mol-1)? C6H12O6 (s, glucose) + 6 O2 (g) ⇌ 6 CO2 (g) + 6 H2O (l) 3) What is the ΔrG for the following reaction (in kJ mol-1) at 298 K? 2 Si (s) + 3 H2 (g) ⇌ Si2H6 (g) The conditions for...
13. The thermal decomposition of aluminum oxide can be represented as follows: A1203 (s) 2 Al (s) +3/2 O2 (g) AHran 1676 KJ If aluminum is produced in this way, how many grams of aluminum Could they be formed when 1,000 x 103 KJ of heat is transferred? 13. La descomposición termal del óxido de aluminio se puede representar de la siguiente forma AlLO (s)2 Al (s)+3/2 O:(g) AHn 1676 K Si el aluminio se produce de esta forma, cuántos...
Help me please
Substance
S°
(J/mol×K)
Al (s)
28.33
Al2O3 (s)
50.92
Cl2 (g)
223.07
H2 (g)
130.68
N2 (g)
191.61
O2 (g)
205.14
Si (s)
18.83
SiCl4 (g)
330.73
SiHCl3 (g)
330.73
SiH2Cl2 (g)
285.71
SiH3Cl (g)
313.87
SiH4 (g)
204.62
Si3N4 (s)
101.3
SiO2 (s)
41.84
1. Predict the sign of
S°rxn for the following processes. Then calculate
S°rxn using the standard values just given.
sign of
S°rxn
S°rxn
a. SiO2 (s)
Si (s) + O2 (g)
b....
The thermochemical equation for the reaction is shown below: 4 Al(s) + 3 O2(g) → 2 Al2O3(s) AH = -3352 kJ How much heat is released when 12.1 g of Al react with O2(g) at 25 °C and 1 atm? 0 - 104 kJ 0 -3.59 x 105 kJ -1.50 x 103 kJ O-376 kJ A 77.0-mL sample of a 0.203 M potassium sulfate solution is mixed with 55.0 mL of a 0.226 M lead(II) nitrate solution and this reaction...
2. Calculate the enthalpy for the reaction below at standard
conditions using Appendix G in your textbook. [Report the answer to
three sig fig, without unit labels, and using +/- signs to indicate
if the reaction is endo- or exothermic.] 2 Al(s) + Fe2O3(s) -->
Al2O3(s) + 2 Fe(s)
Substance AH (kJ mol-) AG; (kJ mol-1) Sº (JK-1 mol-2) aluminum 0 0 28.3 324.4 285.7 164.54 -531 -485 -321.7 Al(s) Al(g) Al3+ (aq) Al2O3(s) AlF3(s) AICI3(s) AlCl3.6H2O(s) -1676 -1582 50.92...
The following questions refer to the following reaction at 25°C and 1 atm. 2Fe(s) + (3/2)O2(g) + 3H2O(1) ► 2Fe(OH)3(3) AH = -789 kJ/mol Substance Fe(OH)3(S) Fe(s) O2(g) H2O(1) Sº (J/mol K) 107 27 205 70 7. Determine ASgurr for the reaction (in kJ/mol K) A) 3.14 B) 0.937 C) 0.378 D) 1.31 E) 2.65 8. Determine ASuniv for the reaction (in kJ/mol K) A) 0.23 B) 2.3 C) 0.36 D) 2.8 E) 3.6
3.(15pts) In each case, find the missing AH. (kJ/mole) (a) If 2 Al(s) + Fe2O3(s) ----> Al2O3(s) + 2 Fe(s) AH,xº = -851.5kJ/mol then 1/8 Al2O3(s) + 1/4 Fe(s) --> 1/4 Al(s) + 1/8 Fe2O3(s) AHX = ? (b) If CaO(8) + 3 C(s) --> CaC2(s) + CO(g) AH,” = 464,8 kJ/mol then 6 CaO(s) + 18 C(s) ---> 6 CaCz(s) +6 CO(g) AHX = ? (c) If N2(g) + 2 O2(g) ---> N204(g) and 2 NO2(g) ----> N2(g) +...
Most questions answered within 3 hours.
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Write balanced chemica
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