it is the rest of my question B. is this reaction exothermic or endothermic?
C. what is the oxidizing agent in this reaction
D. in corrosion reactions the oxidizing agent actually removes electrons from the oxidized substance . are electrons actually removed in combustion?explain
To answer your questions:
B. To determine if a reaction is exothermic or endothermic, you need to look at the energy exchange during the reaction. In an exothermic reaction, heat is released to the surroundings, resulting in a temperature increase. In an endothermic reaction, heat is absorbed from the surroundings, resulting in a temperature decrease.
C. To identify the oxidizing agent in a reaction, you need to understand the concept of oxidation and reduction. Oxidation involves the loss of electrons, while reduction involves the gain of electrons. The species that causes another species to undergo oxidation is known as the oxidizing agent. In order to determine the oxidizing agent, you need to identify which species is being reduced. The oxidizing agent is the species that accepts the electrons in the reaction.
D. In combustion reactions, such as the burning of a substance, electrons are indeed transferred between species. Combustion occurs when a substance reacts with oxygen gas, resulting in the release of heat and light. The substance being burned undergoes oxidation, losing electrons and becoming oxidized. However, it's important to note that combustion reactions involve covalent compounds rather than ionic compounds, so the transfer of electrons is not as apparent as in corrosion reactions. Instead, the electrons are shared between the atoms in the covalent compounds.
To summarize, combustion reactions are exothermic, the oxidizing agent is the species that accepts electrons, and in combustion, electrons are transferred through the sharing of electrons in covalent compounds.