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Exothermic!

Gosh. I had to change two answers which said "Endothermic"

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12y ago
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13y ago

The Haber process is a reversible reaction:

N2(g) + 3H2(g) <---> 2NH3(g)

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This reaction involves, firstly, the breaking of the N2 and H2 gas, which is of cause Endothermic:

N-N ---> 2N B.E. = 994 kJ mol-1

3(H-H) ---> 6H B.E. = 3 * 436 kJ mol-1

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Once the bonds are broken, energy is then evolved to form the subsequent Ammonia gas, which is Exothermic

6(N-H) ---> 2 NH3 B.E. = 6 * 390 kJ mol-1

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By summing up the energy evolved and energy taken in:

By Hess' Law: [Bonds Broken] - [Bonds Formed]

= [(994) + (3 * 436)] - [(6 * 390)] = -38 kJ mol-1

Hence the forward reaction of the Haber Process is exothermic.

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ANOTHER BETTER

METHOD TO CHECK EXOTHERMIC OR ENDOTHERMIC REACTION.

/\ n = Product - Reactant

/\ n = 2 - 4 = -2

since /\n is neagtive the reaction is exothermic.

and is /\n was positive it would have been an endothermic reaction

- Abhijeet Satogiya

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11y ago

The combustion of hydrogen gas, according to the reaction equation 2 H2 + O2 -> 2 H2O, is exothermic.

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12y ago

The Haber process is endothermic because need heat for reactions.

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Q: Is the Haber process reaction endothermic or exothermic?
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Related questions

Why is it necessary to burn the natural gas in the primary reformer Haber process?

the Haber process is endothermic. Energy to make the reaction take place must come from something.


Is an exothermic reaction will produce heat and will be reabsorbed to increase the rate of reaction?

Have you heard of Haber-Bosch process of production of ammonia. This is an example of the question you asked. If we apply the required heat in the beginning of the reaction we do not need to apply it again as its exothermic reversible reaction and will use the heat to continue the reaction. But the rate of reaction is not increased.


What is the product of the Haber process used for?

The Haber process (also called the Haber-Bosch process) is the nitrogen fixation reaction of nitrogen gas and hydrogen gas over an enriched iron or ruthenium catalyst, which is used to produce ammonia. It's main use is in fertilizers, color compounds and N-polymers like nylon.N2 + 3H2 --> 2NH3(exothermic)


What are some examples of endothermic equations and exothermic equations?

Exothermic reactions give out heat. some examples of exothermic reactions are : 1)burning fuel in a fire 2)the addition of acid to water 3)the thermite reaction(this one is quite a sight) 4)the haber process of producing ammonia Endothermic reactions take in heat from their environment. some examples of endothermic reactions are: 1)an ice cube melting 2)depressurising a can(responsible in part why deodorant feels cold) 3)dissolving ammonium nitrate in water 4)decomposition of mercury (II) oxide(this requires a lot of heat)


What is the purpose of the iron in the reactor in the haber process?

The purpose of the iron in the reactor in the haber process is to speed up the reaction.


What type of reaction is the haber process?

its ya nanna :)


Factors that affect the rate of reaction in the haber process?

I have no idea what this is so i will just say woo haber process


High yield on the haber process?

Yield in the Haber process can be maximised by using low temperatures (as the synthesis of ammonia is endothermic) and high pressures (as it promotes the forward reaction as more moles of gas are on the reactants side). However, low temperatures mean a slow reaction rate so compromised temperatures of 300 degrees celsius must be used.


Investigate the industrial reversible reaction known as the haber process?

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What do chemists often call the synthesis of ammonia reaction?

The Haber process.


What does a catalyst do in haber process?

It speeds up the reaction that produces ammonia.


What is the reaction called when nitrogen plus hydrogen yield ammonia?

Haber's process