Is CO + O2 -> CO2 an endothermic or an exothermic reaction?
Also, are all combustion reaction endothermic?
Thanks in advance.
Combustion reactions that I'm familiar with are exothermic. You can find out about this one by looking up delta Hf for CO2 and CO but balance ther equstion first.
The reaction CO + O2 → CO2 is an exothermic reaction. In this particular reaction, carbon monoxide (CO) and oxygen (O2) react to form carbon dioxide (CO2), releasing energy in the process. Exothermic reactions are those that release heat or energy.
As for your second question, not all combustion reactions are endothermic. Combustion reactions involve a fuel (such as hydrocarbons, coal, or wood) reacting with oxygen to produce heat, light, and usually carbon dioxide and water. Most combustion reactions are exothermic because they release energy in the form of heat and light. However, there are cases where combustion reactions can be endothermic if energy is required to initiate or sustain the reaction.
The reaction CO + O2 -> CO2, which represents the combustion of carbon monoxide, is an exothermic reaction. In exothermic reactions, heat is released into the surroundings.
To determine whether a reaction is endothermic or exothermic, you can consider the overall energy change of the reaction. If the products have lower energy than the reactants, then the reaction is exothermic, meaning energy is released. Conversely, if the products have higher energy than the reactants, the reaction is endothermic, meaning it absorbs energy.
In the combustion reaction of carbon monoxide, the energy content of the products (CO2) is lower than the energy content of the reactants (CO and O2). This difference in energy is released as heat, making it an exothermic reaction.
However, not all combustion reactions are endothermic. Combustion reactions typically involve a fuel (such as hydrocarbons) reacting with oxygen to produce carbon dioxide and water. Most of these combustion reactions are exothermic because they release energy in the form of heat and light. Nonetheless, there can be exceptions, where certain reactions may require additional energy to start, making them endothermic combustion reactions.