Octane, C3H18 , is a constituent of gasoline, and burns in the presence of oxygen to produce water and carbon dioxide: 25 O2(g) 18 H2O(1) 2 C3H18 (1) + C3H18 (1) → 16 CO2(g) + ΔΗΟ kJ/2mol %D rxn When a 1.00-gram sample of octane is burned in a bomb calorimeter the temperature of the water and the calorimeter rises from 25.00°C to 33.20°C. If the heat capacity, Cpomb cal, of the empty bomb calorimeter is 837 J/°C, and the mass of the water is 1.200 kg: a) Calculate the heat, q, transferred, during the combustion, to the calorimeter: [ Select ] kJ (calorimter) + qbomb cal Cbomb cal • AT b) Calculate the heat, q, transferred, during the combustion, to the water: [ Select ] kJ (1.200 kg H20) + 9H2O = • AT • SH2O + MH20 c) Calculate the enthalpy change (AHº rxn = kJ/2mol) for this reaction (2 mol of C3H18 (1): [ Select ] kJ/2 mol C3H18 (1)
Octane, C3H18 , is a constituent of gasoline, and burns in the presence of oxygen to produce water and carbon dioxide: 25 O2(g) 18 H2O(1) 2 C3H18 (1) + C3H18 (1) → 16 CO2(g) + ΔΗΟ kJ/2mol %D rxn When a 1.00-gram sample of octane is burned in a bomb calorimeter the temperature of the water and the calorimeter rises from 25.00°C to 33.20°C. If the heat capacity, Cpomb cal, of the empty bomb calorimeter is 837 J/°C, and the mass of the water is 1.200 kg: a) Calculate the heat, q, transferred, during the combustion, to the calorimeter: [ Select ] kJ (calorimter) + qbomb cal Cbomb cal • AT b) Calculate the heat, q, transferred, during the combustion, to the water: [ Select ] kJ (1.200 kg H20) + 9H2O = • AT • SH2O + MH20 c) Calculate the enthalpy change (AHº rxn = kJ/2mol) for this reaction (2 mol of C3H18 (1): [ Select ] kJ/2 mol C3H18 (1)
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Chapter1: Chemical Foundations
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Question
![Octane, C3H18 , is a constituent of gasoline, and burns in the presence of oxygen to produce water and
carbon dioxide:
25 O2(g)
18 H2O(1)
2 C3H18 (1) +
C3H18 (1)
→ 16 CO2(g) +
ΔΗΟ
kJ/2mol
%D
rxn
When a 1.00-gram sample of octane is burned in a bomb calorimeter the
temperature of the water and the calorimeter rises from 25.00°C to 33.20°C.
If the heat capacity, Cpomb cal, of the empty bomb calorimeter is 837 J/°C, and the mass of the water is
1.200 kg:
a) Calculate the heat, q, transferred, during the combustion, to the calorimeter:
[ Select ]
kJ (calorimter)
+ qbomb cal
Cbomb cal • AT
b) Calculate the heat, q, transferred, during the combustion, to the water:
[ Select ]
kJ (1.200 kg H20)
+ 9H2O =
• AT • SH2O
+
MH20
c) Calculate the enthalpy change (AHº rxn = kJ/2mol) for this reaction (2 mol of C3H18 (1):
[ Select ]
kJ/2 mol C3H18 (1)](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2Fb99220ad-d702-4943-b904-ec3abe399c73%2Faaf07915-79a4-465d-98cf-eb71555fbc54%2Fpruivrw_processed.png&w=3840&q=75)
Transcribed Image Text:Octane, C3H18 , is a constituent of gasoline, and burns in the presence of oxygen to produce water and
carbon dioxide:
25 O2(g)
18 H2O(1)
2 C3H18 (1) +
C3H18 (1)
→ 16 CO2(g) +
ΔΗΟ
kJ/2mol
%D
rxn
When a 1.00-gram sample of octane is burned in a bomb calorimeter the
temperature of the water and the calorimeter rises from 25.00°C to 33.20°C.
If the heat capacity, Cpomb cal, of the empty bomb calorimeter is 837 J/°C, and the mass of the water is
1.200 kg:
a) Calculate the heat, q, transferred, during the combustion, to the calorimeter:
[ Select ]
kJ (calorimter)
+ qbomb cal
Cbomb cal • AT
b) Calculate the heat, q, transferred, during the combustion, to the water:
[ Select ]
kJ (1.200 kg H20)
+ 9H2O =
• AT • SH2O
+
MH20
c) Calculate the enthalpy change (AHº rxn = kJ/2mol) for this reaction (2 mol of C3H18 (1):
[ Select ]
kJ/2 mol C3H18 (1)
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