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Reactions are described by this equation:
GD = HD - TDS where D = delta for change in values.
GD < 0 spontaneous
HD < 0 exothermic ; HD > 0 endothermic
The first equation is Gibbs free energy. When G is negative, the reaction is spontaneous. In contrast, a positive number G is non spontaneous. The interesting thing is that spontaneous reactions can be EITHER exothermic and endothermic. Lets look at this:
lets assume HD has a value of 100. This means TDS would have to be bigger than 100 in order to make GD a negative number. An endothermic reaction which has a positive H can still be exothermic.
Here's another way to pose your question: Is an exothermic reaction spontaneous? Always. Is an endothermic reaction spontaneous? This can be either.
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∙ 14y ago
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What is a endopthermic reaction?
An endothermic reaction is a reaction where heat flows from the surroundings in to the system. Holding an cold pack to your skin is an endothermic reaction; heat flows from your skin (surroundings) into to the cold pack (system).
Difference between endothermic and endergonic?
Endergonic means "absorbing energy in the form of work." Endergonic reactions are not spontaneous. An exergonic reaction is a chemical reaction where the change in the free energy is negative, indicating a spontaneous reaction.
Exothermic reaction will release heat as a product?
YES ... an Exothermic reaction gives off heat (as the name implies.) The prefix, 'Exo' tells us it's giving off heat whereas a prefix of 'Endo' (as in Endothermic) means it needs to receive heat.
How is endothermic reaction identified in an equation?
heat is included as a reactant in the reaction - apex
What is the value of G for a reaction that is spontaneous?
The value isn't significant, but ∆G must be negative for a spontaneous reaction.
Aqua regia is the reaction endo or exo?
exo
What is the opposite of exo?
The opposite of exo- is endo-.
are ants endo or exo?
if u mean skeleton then exo
Is freezing Endo or Exo?
Freezing is exothermic.
Does a cockroach have endo skeleton?
No! It has an exo skeleton
What is the opposite of endo?
Exo- is the prefix opposite to endo-, as in exoskeleton and endoskeleton.
Side reaction for syclopentadiene with maleic anhydride?
Side reactions would be the reaction of cyclopentadiene with itself (dimerization) into dicyclopentadiene, as well as the formation of the exo-product along with the usual endo-product (cis-norbornene-5,6-endo-dicarboxylic anhydride).
Does a blue jay have a endo or exo skeleton?
Endoskeleton
Are sponges endo or exo?
They're invertebrates. They have no skeletal structure at all
What does the prefix Exo mean?
Exo means outward or outer or towards out. While endo means inside or to inside
Give the examples for endo and exo skeletons?
Humans and fish have endo skeletons and grasshoppers have exoskeletons (thats why you hear a crack if they are stepped on).
What is a endopthermic reaction?
An endothermic reaction is a reaction where heat flows from the surroundings in to the system. Holding an cold pack to your skin is an endothermic reaction; heat flows from your skin (surroundings) into to the cold pack (system).
