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Ammonia

Lát'ọwọ́ Wikipedia, ìwé ìmọ̀ ọ̀fẹ́
Ammonia

Ammonia
Azane (see text)

Àwọn orúkọ mìírànAmmonia
Hydrogen nitride
Spirit of Hartshorn
Nitro-Sil
Vaporole
Identifiers
CAS number7664-41-7
PubChem222
EC number231-635-3
nọ́mbà UN1005 (anhydrous)
2672,2073,3318 (solutions)
nọ́mbà RTECSBO0875000 (anhydrous)
BQ9625000 (solutions)
SMILES
 
N
InChI
 
1/H3N/h1H3
InChI keyQGZKDVFQNNGYKY-UHFFFAOYAF
ChemSpider ID217
Properties
Molecular formulaNH3
Molar mass17.031 g/mol
AppearanceColorless gas with strong pungent odour
Density0.86 kg/m3 (1.013 bar at boiling point)
0.73 kg/m3 (1.013 bar at 15 °C)
681.9 kg/m3 at −33.3 °C (liquid)[1]
820 kg/m3 at -80 °C (crystal solid)
817 kg/m3 at -80 °C (transparent solid)[2]
Ojúàmì ìyọ́

−77.73 °C (195.42 K)

Ojúàmì ìhó

−33.34 °C (239.81 K)

Solubility inwater1176 g/100 mL (0 °C)
702 g/100 mL (20 °C)
88 g/100 mL (100 °C)
Acidity (pKa)38 (H2O) 41 (DMSO)
Basicity (pKb)4.75
Structure
Molecular shapeTrigonal pyramid
Dipole moment1.42D
Hazards
EU Index007-001-00-5 (anhydrous)
007-001-01-2 (solutions)
EU classificationToxic (T)
Corrosive (C)
Dangerous for the environment (N)
R-phrasesÀdàkọ:R10,Àdàkọ:R23,R34,Àdàkọ:R50
S-phrases(S1/2),Àdàkọ:S9,S16,Àdàkọ:S26,Àdàkọ:S36/37/39,S45,Àdàkọ:S61
NFPA 704
1
3
0
Flash pointflammable gas (see text)
Autoignition
temperature
651 °C
Explosive limits15–28%
U.S.Permissible
exposure limit (PEL)
50 ppm (25 ppmACGIH- TLV; 35 ppmSTEL)
Related compounds
OthercationsPhosphine
Arsine
Stibine
Related nitrogen hydridesHydrazine
Hydrazoic acid
Related compoundsAmmonium hydroxide
 Y (what is this?)  (verify)
Except where noted otherwise, data are given for materials in theirstandard state (at 25 °C, 100 kPa)
Infobox references

Ammonia


Amonia ni kiwanja cha nitrojeni na hidrojeni chenye fomula NH3. Ni bidhaa muhimu ya viwandani. Takriban tani milioni 200 za amonia huzalishwa kila mwaka. Takriban 80% ya amonia inayozalishwa duniani kote hubadilishwa kuwa mbolea za sintetiki kama vile nitrati ya amonia, fosfeti za amonia, salfeti ya amonia, urea na nitrati ya amonia ya kalsiamu. Asilimia 20 iliyobaki hutumika kwa ajili ya uzalishaji wa kemikali na dawa.

Amonia inachukuliwa kama kibebaji muhimu cha nishati katika mifumo ya nishati ya siku zijazo[3].

Amonia huzalishwa kwa kutumia mchakato wa Haber-Bosch: mchanganyiko wa hidrojeni na gesi ya nitrojeni humenyuka kwa nyuzi joto 450-520 na shinikizo la baa 100-150 mbele ya kichocheo cha chuma. Kwa sasa, hidrojeni inayohitajika kwa mchakato wa Haber-Bosch huzalishwa kutoka kwa mafuta ya visukuku (gesi asilia au makaa ya mawe), ambayo husababisha uzalishaji wa CO2. Amonia inayoweza kutumika tena inaweza kuzalishwa ikiwa hidrojeni huzalishwa kutokana na elektrolisisi ya maji kwa kutumia umeme unaoweza kutumika tena (nishati ya jua na upepo). Afrika ina uwezo mzuri wa kuzalisha amonia inayoweza kutumika tena na kupunguza utegemezi wa uagizaji wa mbolea kutoka nje[4][5][6].

Àyọkà yìí tàbí apá rẹ̀ únfẹ́ àtúnṣe sí.

Ẹ lefẹ̀ jù báyìí lọ tàbí kí ẹṣàtúnṣe rẹ̀ lọ́nà tí yíò mu kúnrẹ́rẹ́. Ẹ ran Wikipedia lọ́wọ́ látifẹ̀ẹ́ jù báyìí lọ.


Itokasi

[àtúnṣe |àtúnṣe àmìọ̀rọ̀]
  1. "Pure ammonia". Archived fromthe original on 2009-02-04. Retrieved2009-07-07. 
  2. Blum, Alexander (1975). "On crystalline character of transparent solid ammonia". Radiation Effects and Defects in Solids 24: 277. doi:10.1080/00337577508240819. 
  3. Round Table discussion - ammonia as energy vectorhttps://bmbf-client.de/en/news/coalco2-x-round-table-discussion-ammonia-energy-vector
  4. Conversion of CO2 from South African coal-fired power plants using green ammonia and hydrogenhttps://www.igb.fraunhofer.de/en/reference-projects/coalco2x.html;https://bmbf-client.de/en/news/coalco2-x-pioneering-renewable-ammonia-synthesis-south-africas-fertilizer-future;
  5. Green Ammonia – Production of green ammonia in Moroccohttps://www.igb.fraunhofer.de/en/reference-projects/green-ammonia.html
  6. Skills development workshop for hydrogen and ammoniahttps://www.igb.fraunhofer.de/en/reference-projects/ptx-skills-development-in-tunisia.html
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