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What is the enthalpy change for the reaction: C(s) + O2(g) → CO2(g)?
What is the enthalpy change for the reaction: C(s) + O2(g) → CO2(g)?
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Practice Questions
1 question
Q1
What is the enthalpy change for the reaction: C(s) + O2(g) → CO2(g)?
-393.5 kJ/mol
-241.8 kJ/mol
0 kJ/mol
285.8 kJ/mol
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The enthalpy change for the formation of CO2 from its elements is -393.5 kJ/mol.
Questions & Step-by-step Solutions
1 item
Q
Q: What is the enthalpy change for the reaction: C(s) + O2(g) → CO2(g)?
Solution:
The enthalpy change for the formation of CO2 from its elements is -393.5 kJ/mol.
Steps: 5
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Step 1: Identify the reaction. We have carbon (C) in solid form and oxygen (O2) in gas form reacting to form carbon dioxide (CO2) in gas form.
Step 2: Understand that the enthalpy change (ΔH) is the heat change that occurs during the reaction.
Step 3: Recognize that the enthalpy change for the formation of a compound from its elements is a standard value.
Step 4: Look up the standard enthalpy change for the formation of CO2 from its elements, which is known to be -393.5 kJ/mol.
Step 5: Conclude that the enthalpy change for the reaction C(s) + O2(g) → CO2(g) is -393.5 kJ/mol.
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