What is the heat of reaction when 4 moles of carbon monnozide are buened in oxygen?
To determine the heat of reaction when 4 moles of carbon monoxide (CO) are burned in oxygen (O2), we need to know the balanced chemical equation for the combustion reaction and the corresponding enthalpy change (ΔH).
The balanced chemical equation for the combustion of carbon monoxide is:
2 CO + O2 -> 2 CO2
This means that for every 2 moles of CO that react, we get 2 moles of carbon dioxide (CO2) as a product. Therefore, in this reaction, 4 moles of CO would produce 4 moles of CO2.
Now, we need to know the enthalpy change associated with the combustion of 1 mole of CO. This value can be obtained from reference tables or calculated using experimental data. Let's assume the enthalpy change is -283 kJ/mol.
Since we have 4 moles of CO, we can multiply the enthalpy change by the stoichiometric coefficient (2) for CO in the balanced equation:
-283 kJ/mol * 2 = -566 kJ
Therefore, the heat of reaction when 4 moles of carbon monoxide are burned in oxygen is -566 kJ. The negative sign indicates that the reaction is exothermic (releases heat).