How do you know whether a chemical reaction is exothermic or endothermic?

Let’s learn how do you know whether a chemical reaction is exothermic or endothermic. The most accurate or helpful solution is served by Yahoo! Answers.

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Best solution

How to know if a Chemical reaction is a exothermic or a endothermic?

I do know that an exothermic reaction is what "gives out" energy and the Endothermic which does the opposite but how to know if the chemical reaction that is given to you (regardless of weither it being in Equation forms or not) is an exothermic or an endothermic reaction? There is a part in my question saying "Name these reactions of being a exothermic or endothermic write the answer beside them A.)The condensation of steam of water B.)The burning of magnesium C.)The addition of...

Answer:

A) When a compound undergoes a phase change, such as steam (which is the vapor form of water) to liquid...

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Other solutions

Can you tell, by looking at a chemical equation, if a reaction will be endothermic or exothermic? For example, HCl + NaOH -> NaCl + H2O is exothermic but would you know this just from looking at the reactants and products, without doing calculations?

Answer:

no, to determine if a reaction will be endo or exothermic one need to look at a heats of reactions table...

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Heya, does anyone know if the reaction between amylase and starch is exothermic or endothermic? or none? thnks

thanks :0 does anyone know if the reaction between amylase and starch is exothermic or endothermic? or none? thnks

Answer:

Amylase is an enzyme, that is, it is a catalist for the reaction (eases and accelerates it) but does...

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Is the reaction in figure 15.23 endothermic or exothermic? How do you know?

Answer:

Are you able to text us the reaction in figure 15.23? If you can, we can tell you if it is endo- or...

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In an chemical reaction how do u know into what the reactant's change to which product???

I want to know if suppose a chemical reaction for eg:NaOH+HCl is given without any info on the product say the question is complate the following reaction.So what should the product be exactly? how do u kno?if thr is a certain method to follow please...

Answer:

The general answer is the products will minimize the "Gibb's Free Energy". Values for G can...

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How do we know whether a chemical reaction is reversible or not?

Answer:

What is a reversible reaction? Many reactions, such as fuels burning, are irreversible - they go to...

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How to write chemical equation for this reaction and know if its redox or not ?

the product decompostion of lead IV oxide? leadIV oxide = PbO2 how do i write an equation for it and know if its redox??? if it is which elements reduced and which oxidizes?

Answer:

PbO2==> Pb + O2 its redox http://www.kentchemistry.com/links/Redox…

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If an atom undergoes a reaction and attains a more stable form, how do you know if the reaction was a chemical reaction or a nuclear reaction?

Answer:

If an atom undergoes a reaction and attains a more stable form, you know if the reaction was a chemical...

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Does anybody know the formula for endothermic reaction and exothermic reaction?

Answer:

Exothermic phenomenon: with generation of heat Endothermic phenomenon: with absorption of heat

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Does anybody know of a catchy title for my science experiment? It is an endothermic reaction.

an endothermic reaction is when something cools down and/or absorbs heat.

Answer:

Frozen Fire? Burnt Ice?

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