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Reaction where the products have lower energy than the reactants?
Wiki User
∙ 15y ago
Chemical reaction where the energy content of the products is less than that of the reactants; heat is given out from the system. eg. http://en.wikipedia.org/wiki/Exothermic_reaction * Combustion reactions of fuels * Neutralization reactions such as direct reaction of acid and base * Adding concentrated acid to water * Adding water to anhydrous copper(II) sulfate * The Thermite reaction * Reactions taking place in a self-heating can based on lime and aluminum * The setting of cement and concrete * Many corrosion reactions such as oxidation of metals * Most polymerisation reactions * The Haber-Bosch process of ammonia production
Wiki User
∙ 15y ago
Wiki User
∙ 12y agoExothermic reactions. Think of a boulder sitting at the top of a hill. The reactant is on top of the hill and the product is at the bottom of the hill. The boulder(reaction) goes down the hill, energy was put into the reaction so the boulder could move, therefore exothermic. There is now little or no energy in the boulder at the bottom of the hill, meaning the product has lower energy than the reactant.
Wiki User
∙ 7y agoThe reaction is endothermic
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In an exothermic reaction is the energy of the products higher or lower than that of the reactants?
In an exothermic reaction the energy of the products is less than that of the reactants.
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.
Will a catalyzed reaction have a higher or lower activation rate?
In the presence of a catalyst, a reaction will have a lower activiation energy. In other words, it will be easier for the particles of the reactants to circulate about to move the reaction along, which means it will take less energy to get it started.
If the temperature of the reactants is lower is the reaction rate lower?
Yes, it is frequently possible.
When reactants change to products do the chemicals lose or gain energy?
The formation of bonds causes an energy release, while the breaking of bonds causes an absorption of energy. In a combustion reaction c+o2 --> co2, the reactants have a higher internal energy than the products resulting in a negative internal energy because energy is flowing out of the system to the surroundings. However in co2 ---> c+o2, the reactants have a lower internal energy than the products, so the internal energy of the system is positive as energy is flowing into the system from the surroundings.
In an exothermic reaction is the energy of the products higher or lower than that of the reactants?
In an exothermic reaction the energy of the products is less than that of the reactants.
What is a type of chemical reaction where the energy of the products is less than the energy of the reactants?
When a reaction has products that have a lower temperature than the reactants did, the reaction is endothermic.
Does an exergonic reaction become hot?
An exergonic Reaction will give off heat. The higher energy level (Reactants) will produce a lower energy level (products) and release energy (chemical or kinetic). An exergonic Reaction will give off heat. The higher energy level (Reactants) will produce a lower energy level (products) and release energy (chemical or kinetic).
Why reactants having lower energy of activation move faster?
I dont understand what do you mean by "move", but I know that a chemical reaction can occure easily when energy of products (Ep) is lower than that of reactants (Er). The activation energy is the absolute value of AE=Ep-Er
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.
In an exothermic reaction the products have a what type of bond?
An exothermic reaction can produce a covalently bonded compound or an ionically bonded one. It depends on the starting reactants.
Why do atoms join and make chemical bonds?
generally reaction happen to lower the overall energy of the reactants
Will a catalyzed reaction have a higher or lower activation rate?
In the presence of a catalyst, a reaction will have a lower activiation energy. In other words, it will be easier for the particles of the reactants to circulate about to move the reaction along, which means it will take less energy to get it started.
If a chemical reaction has reached equilibrium and you lower the pressure of the system while keeping the temperature constant what happens to the equilibrium of the reaction?
If all the reactants occupy more volume than all of the products, the reverse reaction will be favored. If all the reactants occupy less volume than all of the products, the forward reaction will be favored. If the products and reagents have the same volume, the equilibrium will not change.
How does a catalyst change the rate of a chemical reaction?
Lowers the activation energy of a reaction, therefore speeding the reaction up.Catalysts speed up chemical reactions. They do not change the products or reactants of the reaction, and are not used up or consumed in the reaction. Biological catalysts are called enzymes. Catalysts lower the activation energy (or energy needed to start a reaction), and cause the reaction to occur more quickly.
Does a low concentration of a chemical slows a reaction rate?
I would point your studies towards collision theory. It's not that a low concentration necessarily slows down a reaction, but that a low concentration will have a slower reaction rate than a higher concentration of reactants. A lower concentration means a lower number of reactants in solution, meaning it is less likely for the reactants to collide and create products. With a lot of reactants, it is much more likely for collisions to occur.
If the temperature of the reactants is lower is the reaction rate lower?
Yes, it is frequently possible.
