Exothermic!
Gosh. I had to change two answers which said "Endothermic"
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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
The combustion of hydrogen gas, according to the reaction equation 2 H2 + O2 -> 2 H2O, is exothermic.
The Haber process is endothermic because need heat for reactions.
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)
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)
The purpose of the iron in the reactor in the haber process is to speed up the reaction.
the haber process was invented by Fritz haber in 1908
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the Haber process is endothermic. Energy to make the reaction take place must come from something.
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.
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)
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)
The purpose of the iron in the reactor in the haber process is to speed up the reaction.
its ya nanna :)
I have no idea what this is so i will just say woo 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.
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The Haber process.
It speeds up the reaction that produces ammonia.
Haber's process