Question

The enthalpy change for the reaction \( \text{C} + \text{O}_2 \rightarrow \text{CO}_2 \) is \( -393.5 \, \text{kJ/mol} \). What is the heat released when 2 moles of carbon react with excess oxygen?

• A. \( -393.5 \, \text{kJ} \)
• B. \( -787 \, \text{kJ} \)
• C. \( -196.75 \, \text{kJ} \)
• D. \( 0 \, \text{kJ} \)

Hint:

Remember: When a reaction involves more than 1 mole of reactant, multiply the enthalpy change by the number of moles to find the total heat released or absorbed.