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The heat of combustion of carbon to CO2 is –393.5 kJ/mol. The heat released upon formation of 35.2 g of CO2 from carbon and oxygen gas is: Plz ans this ques guys .?
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The heat of combustion of carbon to CO2 is –393.5 kJ/mol. The heat re...
Calculating the Heat Released Upon Formation of CO2 from Carbon and Oxygen Gas
Given information:
- Heat of combustion of carbon to CO2 = -393.5 kJ/mol
- Mass of CO2 formed = 35.2 g
Step 1: Calculate the number of moles of CO2 formed
The molar mass of CO2 is 44.01 g/mol. Therefore,
Number of moles of CO2 = Mass of CO2 / Molar mass of CO2
= 35.2 g / 44.01 g/mol
= 0.799 mol
Step 2: Calculate the heat released upon formation of 0.799 mol of CO2
The heat of combustion of carbon to CO2 is -393.5 kJ/mol. This means that when one mole of carbon is burned to form one mole of CO2, 393.5 kJ of heat is released. Therefore,
Heat released upon formation of 0.799 mol of CO2 = -393.5 kJ/mol x 0.799 mol
= -314.0 kJ
Step 3: Convert the answer to positive value
The negative sign indicates that heat is released during the process. However, the question asks for the heat released, which is a positive value. Therefore,
Heat released upon formation of 35.2 g of CO2 = 314.0 kJ (positive value)
Conclusion
The heat released upon formation of 35.2 g of CO2 from carbon and oxygen gas is 314.0 kJ.
Given information:
- Heat of combustion of carbon to CO2 = -393.5 kJ/mol
- Mass of CO2 formed = 35.2 g
Step 1: Calculate the number of moles of CO2 formed
The molar mass of CO2 is 44.01 g/mol. Therefore,
Number of moles of CO2 = Mass of CO2 / Molar mass of CO2
= 35.2 g / 44.01 g/mol
= 0.799 mol
Step 2: Calculate the heat released upon formation of 0.799 mol of CO2
The heat of combustion of carbon to CO2 is -393.5 kJ/mol. This means that when one mole of carbon is burned to form one mole of CO2, 393.5 kJ of heat is released. Therefore,
Heat released upon formation of 0.799 mol of CO2 = -393.5 kJ/mol x 0.799 mol
= -314.0 kJ
Step 3: Convert the answer to positive value
The negative sign indicates that heat is released during the process. However, the question asks for the heat released, which is a positive value. Therefore,
Heat released upon formation of 35.2 g of CO2 = 314.0 kJ (positive value)
Conclusion
The heat released upon formation of 35.2 g of CO2 from carbon and oxygen gas is 314.0 kJ.
Community Answer
The heat of combustion of carbon to CO2 is –393.5 kJ/mol. The heat re...
1 mol or 44g of CO2 formed releases -393.5 KJ of heat so 35.2g of CO2 formed releases -393.5 × 35.2/ 44 = -314.8 KJ of heat...
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The heat of combustion of carbon to CO2 is –393.5 kJ/mol. The heat released upon formation of 35.2 g of CO2 from carbon and oxygen gas is: Plz ans this ques guys .?
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The heat of combustion of carbon to CO2 is –393.5 kJ/mol. The heat released upon formation of 35.2 g of CO2 from carbon and oxygen gas is: Plz ans this ques guys .? for NEET 2025 is part of NEET preparation. The Question and answers have been prepared according to the NEET exam syllabus. Information about The heat of combustion of carbon to CO2 is –393.5 kJ/mol. The heat released upon formation of 35.2 g of CO2 from carbon and oxygen gas is: Plz ans this ques guys .? covers all topics & solutions for NEET 2025 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for The heat of combustion of carbon to CO2 is –393.5 kJ/mol. The heat released upon formation of 35.2 g of CO2 from carbon and oxygen gas is: Plz ans this ques guys .?.
The heat of combustion of carbon to CO2 is –393.5 kJ/mol. The heat released upon formation of 35.2 g of CO2 from carbon and oxygen gas is: Plz ans this ques guys .? for NEET 2025 is part of NEET preparation. The Question and answers have been prepared according to the NEET exam syllabus. Information about The heat of combustion of carbon to CO2 is –393.5 kJ/mol. The heat released upon formation of 35.2 g of CO2 from carbon and oxygen gas is: Plz ans this ques guys .? covers all topics & solutions for NEET 2025 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for The heat of combustion of carbon to CO2 is –393.5 kJ/mol. The heat released upon formation of 35.2 g of CO2 from carbon and oxygen gas is: Plz ans this ques guys .?.
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