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How do you predict if a reaction will be exothermic or endothermic?
Although it is hard to predict if a reaction will be exothermic or endothermic, there are many factors that can be considered when trying to determine it. first endothermic reactions usually employ the breaking of strong bonds, and the creation of weak bonds. While exothermic reactions usually break weak bonds and create strong bonds. Sadly these are the only ways to predict if a reaction will be endothermic or exothermic, altough there are other methods that could be used that are much more complex.
Is the combustion of methane an exothermic or endotermic?
Endothermic means that the net energy produced when chemical bonds reform is less that the energy required to break the original bonds. (It gets cold because it need more energy from the surrounding molecules)Exothermic means that the net energy produced is more than the required energy to break the original bonds. (it gets hot because it releases energy)Using logic and personal experiences, when you ignite something, such as methane, it burns. just the fact that it burns shows that it is releasing energy in the form of light/heat. this makes the combustion of methane Exothermic.
Is electrolysis of water an example of exothermic process?
Breaking chemical bonds is always endothermic. 463 kJ/mole are required to break O-H bonds. There are two O-H bonds per water molecule, so one mole of water requires 926kJ to break all the bonds. this energy requirement is supplied by the electrical current.
Is vaporization is a exothermic or endothermic?
Yes, vaporization is an endothermic reaction while freezing is an exothermic reaction. Think of a pot of water set of the stove. What are you doing to it? You're putting in heat in order to break the hydrogen bonds. The heat/energy is being expendedor absorbed to make the water boil. In the case of freezing (say water), the hydrogen bonds are realigning while producing heat.
How do you tell endothermic reaction from an exothermic reaction by looking at the chemical equation?
You have to add up the bond energies of all the bonds on the products side and the reactants side. When bonds are formed energy is released. Conversely energy has to be put into a system to break bonds (like smashing a block of ice with a baseball bat) If there is more bond energy on the products side bonds were created (energy was released) which means the reaction is exothermic. If there is more bond energy on the reactants side, bonds were broken (energy put in) and so the reaction is endothermic.
In exothermic reactions the energy required to break the bonds in the reactants is greater than the energy released as the products form?
Exothermic reaction
Difference in exothermic and endothermic reaction?
An endothermic reaction is when the atoms break and need to abosrb heat. An exothermic reaction is whe new bonds are made and give heat to the surroundings.
What is endothermic and exothermic?
Exothermic refers to a reaction that produces heat. When you balance the equation the energy released when new bonds are formed is greater than the energy use when bonds are broken. An endothermic reaction takes in heat as it requires more energy to break its bonds than it has from the bonds it creates.
How do you predict if a reaction will be exothermic or endothermic?
Although it is hard to predict if a reaction will be exothermic or endothermic, there are many factors that can be considered when trying to determine it. first endothermic reactions usually employ the breaking of strong bonds, and the creation of weak bonds. While exothermic reactions usually break weak bonds and create strong bonds. Sadly these are the only ways to predict if a reaction will be endothermic or exothermic, altough there are other methods that could be used that are much more complex.
Do reactants and products break during a chemical reaction?
In a reaction, the bonds in reactants are broken down (endothermic) and new bonds formed. The new bonds formed (exothermic) will result in the formation of the products.
What the distinguish between exothermic and endothermic?
Endothermic reactions are reactions that create bonds between atoms, which means they require energy, so they take heat energy from its surroundings to create the bonds (meaning the reaction produces "cold"), and exothermic reactions are ones which break bonds between atoms, giving off energy and thus heat.
Is the combustion of methane an exothermic or endotermic?
Endothermic means that the net energy produced when chemical bonds reform is less that the energy required to break the original bonds. (It gets cold because it need more energy from the surrounding molecules)Exothermic means that the net energy produced is more than the required energy to break the original bonds. (it gets hot because it releases energy)Using logic and personal experiences, when you ignite something, such as methane, it burns. just the fact that it burns shows that it is releasing energy in the form of light/heat. this makes the combustion of methane Exothermic.
Is electrolysis of water an example of exothermic process?
Breaking chemical bonds is always endothermic. 463 kJ/mole are required to break O-H bonds. There are two O-H bonds per water molecule, so one mole of water requires 926kJ to break all the bonds. this energy requirement is supplied by the electrical current.
Does an exothermic reaction contain more chemical energy than reactants?
depends , if the reaction is endothermic or exothermic. if the reaction is endothermic , the energy needed to break the bonds is greater than the energy that forms bonds.and to break bonds you need thermal energy , meanwhile forming bonds gives off energy. now if the reaction is exothermic the energy given off the bonds form are greater than the enrgy needed to break them. you know if the reaction is exothermic or endothermic because exothermic have a negitave delta next to d eqn.while endothermic have a positive delta.
Is vaporization is a exothermic or endothermic?
Yes, vaporization is an endothermic reaction while freezing is an exothermic reaction. Think of a pot of water set of the stove. What are you doing to it? You're putting in heat in order to break the hydrogen bonds. The heat/energy is being expendedor absorbed to make the water boil. In the case of freezing (say water), the hydrogen bonds are realigning while producing heat.
How do you tell endothermic reaction from an exothermic reaction by looking at the chemical equation?
You have to add up the bond energies of all the bonds on the products side and the reactants side. When bonds are formed energy is released. Conversely energy has to be put into a system to break bonds (like smashing a block of ice with a baseball bat) If there is more bond energy on the products side bonds were created (energy was released) which means the reaction is exothermic. If there is more bond energy on the reactants side, bonds were broken (energy put in) and so the reaction is endothermic.
Is thermal decomposition a endothermic or exothermic reaction?
Thedecompositionof water is endothermic since energy is required to break up the bonds between the hydrogen and oxygen in the water molecule. Therefore the decomposition of water absorbs energy, making the reaction an endothermic one.
