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Does an exothermic reaction contain more chemical energy than reactants?
Wiki User
∙ 11y ago
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.
Wiki User
∙ 11y ago
Wiki User
∙ 9y agoSince an endothermic reaction absorbs heat from its environment, the enthalpy increases or is positive for this reaction. The enthalpy of the reactants is less than the enthalpy of the products in this type of reaction.
Wiki User
∙ 11y agoIn an exothermic reaction, heat is released to the surroundings. This is because the energy released when the reactants' bonds were broken is greater than the energy absorbed when the products' bonds re-form. The leftover energy is passed along to the environment, where it can be measured and recorded as an increase in heat. So, the reactants had a greater chemical potential energy than the products.
Wiki User
∙ 12y agoIn an exothermic reaction heat is released, so the enthalpy of the products would be lower than the enthalpy of the reactants because it is losing energy.
Wiki User
∙ 11y agoThere is energy in both, but there is more energy in the products than in the reactants.
Wiki User
∙ 6y agoThe products have a higher energy.
Wiki User
∙ 15y agoexo exo
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How do the reactants of a chemical reaction differ from the products of the same reaction?
They contain different combinations of particles.
In a combustion reaction between butane and oxygen which contains more energy reactants catalyst products or products and reactants contain the same amount of energy?
Every combustion process is exothermic (the release of heat and light) so the products have low energy as compare to reactants which are in this case Butane and oxygen.
What causes exothermic reactions?
A chemical reaction is when bonds are broken are remade to form something else.First, you start off with the initial substances you start off with are known as the reactants.Example) AB + CDIn this example, AB is one of your initial bonded substances and CD is your second initial bonded substances, which are known as reactants.Between the bonds of AB and CD is a lot of potential energy. But then energy, known as the activation force, is applied to the bonds. This activation energy causes the bonds to enter a transition state. In the transition state, the bonds are undermined and broken.Then after the bonds are broken, the amount of energy begins to decrease again.Then the bonds reform. So now you get AC + CD. This is called your product.This is how an exothermic reaction occurs. But keep in mind that in order for a chemical reaction to occur, the reactants must collide with sufficient energy and proper orientation, otherwise nothing will happen.
If one reactants of the in a reaction is Na2O what is known about the products?
The products will contain the elements Na and O.
Select the skeleton equation?
A skeleton equation in chemistry contains obviously the abbreviations of the elements you are being asked to represent. it may contain the exponents also known as subscripts but it does not include coefficients.
How do the reactants of a chemical reaction differ from the products of the same reaction?
They contain different combinations of particles.
What information does chemical information contain?
the reactants and products. reactants=what compounds or elements are reacting products= what compounds or elements are produced from the reaction
What must be true about the properties of the reactants and the properties of the products in a chemical reaction?
The reactants and the products must contain the same numbers of the same types of atoms, that is, atoms with the same atomic number, and either the products must contain at least one type of chemical bond distinct from any chemical bond in the reactants or the reactants must contain at least one type of chemical bond not found in the products.
How is an exothermic reaction indicated in an eq?
heat is included as one of the products cause : a-p-e-x quiz !
What is chemical reaction that gives off heat called?
Exothermic reactions give off heat.
How do chemical reaction change substances?
After a chemical reaction, some of the bonds have been broken, and some new bonds have been formed. So, that's how a substance is changed after the reaction.
In a combustion reaction between butane and oxygen which contains more energy reactants catalyst products or products and reactants contain the same amount of energy?
Every combustion process is exothermic (the release of heat and light) so the products have low energy as compare to reactants which are in this case Butane and oxygen.
How do you know it is a exothermic reaction?
If you are in a lab and want to tell whether a reaction was exothermic, carefully check the temperature of the reaction vessel. If the reaction was exothermic, the vessel will be warmer than it was before the reaction occurred. If you are looking at a reaction on paper, you will need a table of thermodynamic data. It should contain the molar enthalpies of formation, represented by H, of each of the reactants and products (note: if a reactant or product is an element in its most stable state, like H2(g) or Zn(s), the enthalpy of formation is defined as zero, so they may be left out of the table). Multiply the number of moles of each product and reactant by its molar enthalpy. Add up all the results for the products and subract all the results for the reactants. If your net result is negative, the reaction was exothermic. If it is positive, the reaction was endothermic. Example: CH4(g)+2O2(g)-->CO2(g)+2H2O(g) Delta H (kJ/mol) CH4(g) -74.8 O2(g) 0 CO2(g) -393.5 H2O(g) -241.82 Products: 2(-241.82)+(-393.5)= -877.14 kJ Reactants: -74.8+2(0)= -74.8 kJ Total: -877.14-(-74.8)= -802.34 kJ The reaction was exothermic.
Chemical equation has how many parts?
Most chemical equations have a few standard elements (no pun intended). There are the reactants on the left side, the arrow showing the direction of the reaction, and the products on the right side. Sometimes, properties of the reaction such as the enthalpy is shown after the equation. Often times, especially in organic chemistry, there will be other compounds or parameters written above and/or below the reaction arrow to indicate what chemicals were needed to make the reaction occur.
When looking at a chemical reaction how do you know what the reactants and products are?
In an equation the reactants are the on the left of the arrow, and the products are on the right. For example if you had the following equation: 2H2 + O2 => 2H2O 2H and O will be the reactants and H2O is the product.
Is digestion an exothermic reaction?
The food we eat contain starch,on digestion in mouth it is coverted into sugar.in body it gives co2,o2 with required energy.Hence digestion is an exothermic reaction.
What causes exothermic reactions?
A chemical reaction is when bonds are broken are remade to form something else.First, you start off with the initial substances you start off with are known as the reactants.Example) AB + CDIn this example, AB is one of your initial bonded substances and CD is your second initial bonded substances, which are known as reactants.Between the bonds of AB and CD is a lot of potential energy. But then energy, known as the activation force, is applied to the bonds. This activation energy causes the bonds to enter a transition state. In the transition state, the bonds are undermined and broken.Then after the bonds are broken, the amount of energy begins to decrease again.Then the bonds reform. So now you get AC + CD. This is called your product.This is how an exothermic reaction occurs. But keep in mind that in order for a chemical reaction to occur, the reactants must collide with sufficient energy and proper orientation, otherwise nothing will happen.
