Abubuwan sunadarai

Tururi da ruwa ruwa sune nau'o'i daban-daban guda biyu na sinadarai guda ɗaya, ruwa.

Wani sinadarai wani nau'i ne na musamman na kwayoyin halitta tare da sinadarin sinadaraisinadarin sinadarai halaye. Abubuwan sinadarai na iya ɗaukar nau'in kashi ɗaya ko mahaɗan sunadarai. Idan za'a iya haɗa sinadarai biyu ko fiye batare da amsawa ba, zasu iya samar da cakuda sinadarai. Idan an raba cakuda don ware sinadarai guda ɗaya zuwa matakin da ake so, ana cewa abin daya samo asali yana mai tsabta.

Abubuwan sunadarai na iya kasancewa a cikin jihohin daban-daban na jiki ko matakai (misali solids, ruwa, iskar gas, ko Plasma) batare da canza sinadarin sunadarai ba. Abubuwa suna canzawa tsakanin waɗannan matakai na kwayoyin halitta don mayar da martani ga canji-canje a zafin jiki ko matsin lamba. Wasu sinadarai za'a iya haɗa su ko canza su zuwa sababbin abubuwa ta hanyar halayen sunadarai. Chemicals da basu da wannan ikon ance basu da amfani.

ruwa mai tsabta misali ne na sinadarai, tare da abun dake tattare da nau'ikan hydrogen guda biyu da aka haɗa da atom din oxygen guda ɗaya (watau H₂). Rashin atom na hydrogen zuwa oxygen koyaushe shine 2:1 a cikin kowane kwayar ruwa. Ruwa mai tsabta zai tafasa kusa da 100 °C (212 °F) ° C (212 ° F), misali na ɗayan halaye dake bayyana shi. Sauran sanannun sinadarai sun haɗa da lu'u-lu'u (wani nau'in carbon), gishiri na tebur (NaCl; fili na ionic), da kuma sukari mai tsabta (C₁₂; fili na kwayoyin halitta).

Ma'anar

Launuka na sinadarai guda ɗaya (ja na Nile) a cikin masu narkewa daban-daban, a ƙarƙashin haske mai ganuwa da UV, yana nuna yadda sinadarin ke hulɗa da ƙarfi tare da yanayin narkewa.

Baya ga ma'anar da aka bayar a sama, akwai fannoni da yawa inda kalmar "abu na sinadarai" na iya ɗaukar amfani daban-daban waɗanda aka yarda dasu, wasu daga cikinsu an tsara su a cikin sassan da ke ƙasa.

Inorganic sunadarai

Chemical Abstracts Service (CAS) ya lissafa gami dayawa na rashin tabbas a cikin sinadarin sunadarai. Duk da yake ana iya bayyana gami a matsayin cakuda, ambaton su a cikin sinadarai yana bada damar CAS don bada takamaiman jagora game da sunan ma'auni na abubuwan da aka haɗa. Magungunan daba na stoichiometric wani lamari ne na musamman daga ilmin sunadarai na inorganic, wanda ya sabawa abin da ake buƙata don abun dake ciki na yau da kullun. Ga waɗannan abubuwa, yana iya zama da wahala a zana layin tsakanin cakuda da fili, kamar yadda yake ga palladium hydride. Za'a iya samun ma'anar sunadarai ko sinadarai, alal misali: "kalmar 'abu na sinadarai' tana nufin duk wani abu na kwayoyin halitta ko inorganic na wani asalin kwayoyin, gami da - (i) duk wani haɗuwa da irin waɗannan abubuwa dake faruwa gaba ɗaya ko a wani ɓangare sakamakon halayen sinadarai ko faruwa a cikin yanayi".

Ilimin ƙasa

A fannin ilimin ƙasa, abubuwa masu ƙarfi na inorganic na daidaitaccen abun dake ciki ansan su da ma'adanai. Lokacin da aka haɗa ma'adanai biyu ko fiye don samar da cakuda (ko tarawa), ana bayyana su a matsayin duwatsu. Yawancin ma'adanai, duk da haka, suna narkewa cikin juna a cikin mafita mai ƙarfi, irin wannan dutse ɗaya abu ne guda duk da kasancewa cakuda a cikin kalmomin stoichiometric. Feldspars misali ne na yau da kullun: anorthoclase shine alkali aluminum silicate, inda ƙarfe na alkali ke musayar ko dai sodium ko potassium.

Dokar

A cikin doka, "abubuwan sunadarai" na iya haɗawa da abubuwa masu tsabta da cakuda tare da ƙayyadaddun abun dake ciki ko tsarin masana'antu. Misali, ka'idar EU REACH ta bayyana "abubuwa guda ɗaya", "abubuwa da yawa" da "abubuwa marasa sani ko masu canji". Biyu na ƙarshe sun ƙunshi abubuwa masu yawa na sunadarai; duk da haka, ana iya kafa asalin su ko dai ta hanyar nazarin sunadarai kai tsaye ko kuma ambaton tsarin masana'antu guda ɗaya. Misali, gawayi yana da matukar rikitarwa, wani bangare na cakuda polymeric wanda za'a iya bayyana shi ta hanyar tsarin masana'anta. Sabili da haka, kodayake ba a san ainihin asalin sunadarai ba, ana iya yin ganewa tare da isasshen daidaito. Har ila yau, lissafin CAS ya haɗa da cakuda.

Sashin sunadarai na polymer

Polymers kusan koyaushe suna bayyana a matsayin cakuda kwayoyin da yawa, kowannensu ana iya la'akari da sinadarai daban. Koyaya, ana iya bayyana polymer ta hanyar sanannen mai gabatarwa ko amsawa (s) da rarrabawar ma'auni. Misali, polyethylene cakuda ne na dogon sarƙoƙi na -CH₂- maimaita raka'a, kuma ana sayar dashi gabaɗaya a cikin rarrabawar yawa, LDPE, MDPE, HDPE da UHMWPE.

Tarihi

Ma'anar "abu na sunadarai" ta zama mai ƙarfi a ƙarshen ƙarni na goma sha takwas bayan aikin da masanin sunadarai Joseph Proust ya yi akan abun dake ciki na wasu sinadarai masu tsabta kamar su carbonate na jan ƙarfe. Ya ƙaddara cewa, "Duk samfurori na fili suna da abun dake ciki iri ɗaya; wato, duk samfurori suna da daidaito iri ɗaya, ta hanyar taro, na abubuwan da ke cikin fili. " Wannan yanzu an san shi da dokar abun dake cikin lokaci. Daga baya tare da cigaban hanyoyin hada sunadarai musamman a cikin masarautar ilmin sunadarai; gano wasu abubuwa masu yawa na sunadarai da sabbin dabaru a cikin masarar ilmin sunidarai da akayi amfani dasu don warewa da tsarkake abubuwa da mahadi daga sunadarai wanda ya haifar da kafa ilmin sunada na zamani, an bayyana manufar kamar yadda ake samu a yawancin litattafan ilmin sunadaran. Koyaya, akwai wasu rikice-rikice game da wannan ma'anar galibi saboda yawan sinadarai da aka ruwaito a cikin wallafe-wallafen sunadarai suna buƙatar a jera su.

Isomerism ya haifar da damuwa sosai ga masu bincike na farko, tunda isomers suna da ainihin abun dake ciki, amma sun bambanta da tsari (shirye-shiryen) na atoms. Misali, akwai hasashe da yawa game da asalin sunadarai na benzene, har sai Friedrich August Kekulé ya bayyana tsarin da yadace. Hakazalika, ra'ayin stereoisomerism - cewa atoms suna da tsari mai tsayi na uku kuma suna iya samar da isomers waɗanda suka bambanta kawai a cikin tsari na uku - wani muhimmin mataki ne na fahimtar manufar abubuwa masu sinadarai daban-daban. Misali, tartaric acid yana da isomers daban-daban guda uku, diastereomers guda biyu tare da diastereomer guda ɗaya wanda ke samar da enantiomers biyu.

Abubuwan sunadarai

Gilashin sulfur na asali. Sulfur yana faruwa ne ta hanyar halitta a matsayin sulfur na asali, a cikin ma'adanai na sulfide da sulfate da kuma hydrogen sulfide.

Samfuri:ExcerptWani abu ne mai sinadarai wanda ya kashi wani nau'in atom kuma saboda haka baza'a iya karya shi ba ko canza shi ta hanyar sinadarin sinadarai zuwa wani abu daban, kodayake ana iya canza shi zuwa wani abu ta hanyar nukiliya. Wannan shine saboda duk atoms a cikin samfurin wani kashi suna da adadin protons iri ɗaya, kodayake suna iya zama isotopes daban-daban, tare da lambobi daban-daban na Neutron.

Ya zuwa 2019, akwai abubuwa 118 da aka sani, kusan 80 daga cikinsu suna da kwanciyar hankali - wato, basa canzawa ta hanyar lalacewar rediyo zuwa wasu abubuwa. Wasu abubuwa na iya faruwa a matsayin fiye da sinadarai guda ɗaya (allotropes). Misali, iskar oxygen ta wanzu a matsayin iskar oxygen (O₂) da ozone (O₃). Yawancin abubuwa ana rarraba su a matsayin karafa. Wadannan abubuwa ne dake da halayyar halayyar kamar ƙarfe, jan ƙarfe, da zinariya. Karfe yawanci suna gudanar da wutar lantarki da zafi sosai, kuma suna da sassauci kuma suna da sauƙi. Kusan abubuwa 14 zuwa 21, kamar su carbon, nitrogen, da oxygen, ana rarraba su a matsayin wadanda ba ƙarfe ba. Wadanda ba ƙarfe basu da kaddarorin ƙarfe da aka bayyana a sama, suna kuma da babban electronegativity da kuma halin samar da ions marasa kyau. Wasu abubuwa kamar silicon wani lokacin suna kama da karafa kuma wani lokacin suna zama kamar wadanda ba karafa ba, kuma an san su da metalloids.

Haɗin sunadarai

Potassium ferricyanide fili ne na potassium, baƙin ƙarfe, carbon da nitrogen; kodayake yana ƙunshe da anions na cyanide, baya sakin su kuma ba mai guba.

Wani sinadarin sinadarai shine sinadarin da ya kunshi wani tsari na atoms ko ions. Abubuwa biyu ko fiye da suka haɗu cikin abu ɗaya ta hanyar halayen sunadarai sun samar da mahaɗin sunadarai. Dukkanin mahadi abubuwa ne, amma ba duk mahadi bane.

Wani sinadarin sunadarai na iya zama ko dai atoms da aka haɗa tare a cikin kwayoyin ko lu'ulu'u inda atoms, kwayoyin ko ions suka samar da lattice na lu'ulu-lu'u. Abubuwan da suka danganci carbon da hydrogen ana kiransu mahadi na kwayoyin halitta, kuma duk sauran ana kiransu mahaɗan inorganic. Abubuwan dake dauke da haɗin tsakanin carbon da ƙarfe ana kiransu mahadi na organometallic.

Abubuwan dake raba electrons an san su da mahaɗan covalent. Abubuwan dake kunshe da ions masu caji da suka dace an san su da mahadi na ionic, ko gishiri.

Haɗin haɗin kai sune mahadi inda haɗin dative ke riƙe da abu tare batare da haɗin covalent ko ionic ba. Haɗin haɗin kai abubuwa ne daban-daban tare da halaye daban-daban daban-daban daga cakuda mai sauƙi. Yawanci waɗannan suna da ƙarfe, kamar ion na jan ƙarfe, a tsakiya da kuma atom ɗin daba na ƙarfe ba, kamar nitrogen a cikin kwayar ammoniya ko iskar oxygen a cikin ruwa a cikin kwafin ruwa, suna samar da haɗin dative zuwa cibiyar ƙarfe, misali tetraamminecopper (II) sulfate [Cu (NH₃) ₄]SO₄. An san ƙarfe a matsayin "cibiyar ƙarfe" kuma abin dake daidaitawa zuwa cibiyar ana kiransa "ligand". Koyaya, cibiyar ba ta buƙatar zama ƙarfe, kamar yadda aka kwatanta da 2" href="./Boron_trifluoride_etherate" id="mw1A" rel="mw:WikiLink" title="Boron trifluoride etherate">boron trifluoride etherate BF₃, inda cibiyar Lewis acidic, amma ba ƙarfe bata ɗaukar matsayin "karfe". Idan haɗin haɗin ya haɗa da cibiyar ƙarfe tare da ƙwayoyin halitta da yawa, ana kiran rikitarwa chelate.

A cikin ilmin sunadarai na kwayoyin halitta, akwai yiwuwar zama sinadarai fiye da ɗaya tare da wannan abun dake ciki da nauyin kwayoyin. Gabaɗaya, ana kiran waɗannan isomers. Isomers yawanci suna da nau'ikan sunadarai daban-daban, kuma galibi ana iya ware su batare da canzawa ba. Misali na yau da kullun shine glucose vs. fructose . Tsohon shine aldehyde, na ƙarshe shine ketone. Canjin su yana buƙatar ko dai enzymatic ko acid-base catalysis.

Koyaya, tautomers banbanci ne: isomerization yana faruwa ba zato ba tsammani a cikin yanayi na yau da kullun, irin wannan ba za a iya ware wani abu mai tsabta a cikin tautomers ba, koda kuwa ana iya gano waɗannan ta hanyar spectroscopically ko ma ware su a cikin yanayi ta musamman. Misali na yau da kullun shine glucose, wanda keda nau'ikan sarkar da zobe. Mutum bazai iya ƙera glucose mai tsabta ba saboda glucose yana motsawa zuwa nau'in hemiacetal.

Abubuwa da aka cakuda

gilashi Cranberry, yayin da yake bayyana homogeneous, cakuda ne wanda ya kunshi gilashi da ƙwayoyin zinariya na kusan 40 nm a diamita, yana bashi launin ja. 

Dukkanin kwayoyin sun ƙunshi abubuwa daban-daban da mahaɗan sunadarai, amma waɗannan galibi suna haɗuwa tare. Mixtures sun ƙunshi sinadarai fiye da ɗaya, kuma basu da wani abu mai mahimmanci. Man shanu, ƙasa da itace misalai ne na yau da kullun na cakuda. Wani lokaci, ana iya raba cakuda zuwa cikin abubuwan dake cikin su ta hanyar matakai na inji, kamar su Chromatography, distillation, ko evaporation.

Karfe mai launin toka da sulfur mai launin rawaya duka sunadarai ne, kuma ana iya haɗa su tare a kowane rabo don samar da cakuda mai launin rawayan-gris. Babu wani tsari na sunadarai dake faruwa, kuma ana iya gano kayan a matsayin cakuda ta hanyar gaskiyar cewa sulfur da baƙin ƙarfe za'a iya raba su ta hanyar aikin inji, kamar amfani da Magnet don jawo baƙin ƙarfe daga sulfur.

Sabanin haka, idan an dumama baƙin ƙarfe da sulfur tare a cikin wani rabo (1 atom na baƙin ƙarfe ga kowane atom na sulfur, ko ta nauyi, grams 56 (1 mol) na baƙin ƙar ƙarfe zuwa gram 32 (1 mol) nke sulfur), ana yin sinadarin sinadarai kuma an kafa sabon abu, ƙarfe (II) sulfide, tare da tsarin sinadarai FeS.  Sakamakon fili yana da dukkan kaddarorin sinadarai kuma ba cakuda bane. Iron (II) sulfide yana da nasa halaye daban-daban kamar narkewa da solubility, kuma baza'a iya raba abubuwa biyu ta amfani da hanyoyin inji na yau da kullun ba; magnet bazai iya dawo da baƙin ƙarfe ba, tunda babu baƙin ƙarfe na ƙarfe a cikin fili.

Chemicals da sinadarai

Chemicals a cikin digiri na digiri da giya.

Duk da yake kalmar sinadarai daidai ce ta fasaha wacce take daidai da sinadarai ga masana sunadarai, ana amfani da kalmar sinadarin a cikin amfani gabaɗaya don komawa ga duka (tsarkakewa) sinadarai da cakuda (sau dayawa ana kiransu mahaɗin), kuma musamman lokacin da aka samar ko tsarkakewa a cikin dakin gwaje-gwaje ko tsarin masana'antu A wasu kalmomi, sinadarai waɗanda 'ya'yan itatuwa da kayan lambu, alal misali, an haɗa sune ko da lokacin da suke girma da daji ba'a kira su "chemicals" a cikin amfani gaba ɗaya ba. A cikin ƙasashen dake buƙatar jerin sinadaran a cikin samfuran, "chemicals" da aka lissafa an samar dasu ta hanyar masana'antu "chemical substances". Kalmar "chemical" ana amfani da ita sau dayawa don nunawa ga miyagun ƙwayoyi masu jaraba, narcotic, ko masu canza tunani.

A cikin masana'antar sunadarai, "chemicals" da aka ƙera sune sinadarai, waɗanda za'a iya rarraba su ta hanyar samar da sinadarai a cikin sinadarai masu yawa, sinadarai da sinadarin da aka samo a cikin bincike kawai:

• Ana samar da sunadarai masu yawa a cikin adadi mai yawa, yawanci tare da ingantaccen tsari na cigaba kuma zuwa farashi mai ƙarancin gaske.
• Ana samar da sinadarai masu kyau a farashi mai yawa a cikin ƙananan adadi don aikace-aikace na musamman kamar su biocides, magunguna da sunadarai na musamman don aikace-shiryen fasaha.
• Ana samar da sunadarai na bincike kowannensu don bincike, kamar lokacin neman hanyoyin roba ko abubuwan tantancewa don aikin magunguna. A zahiri, farashin su na gram yana dayawa, kodayake ba'a sayar dasu ba.

Dalilin bambancin a cikin girman samarwa shine rikitarwa na tsarin kwayoyin sunadarai. Yawancin sunadarai ba su da rikitarwa. Duk da yake sunadarai masu kyau na iya zama masu rikitarwa, da yawa daga cikinsu suna da sauƙi don a sayar da su a matsayin "ginin gini" a cikin kira na kwayoyin da suka fi rikitarwa don amfani ɗaya, kamar yadda aka ambata a sama. samarwa da sinadarai ya haɗa da ba kawai kira ba harma da tsarkakewa don kawar da samfurori da ƙazanta dake cikin kira. Mataki na ƙarshe a cikin samarwa ya kamata yazama nazarin tarin sunadarai don ganowa da ƙididdigar ƙazanta ga mai siye na sunadarai. Tsarkakewa da bincike da ake buƙata ya dogara da aikace-aikacen, amma yawanci ana sa ran haƙuri mafi girma na ƙazanta a cikin samar da sunadarai masu yawa. Don haka, mai amfani da sinadarin a Amurka na iya zaɓar tsakanin babba ko "ƙwarewar fasaha" tare da ƙazanta mafi girma ko kuma "ƙwarewa ta magani" (mai suna "USP", Amurka Pharmacopeia). "Khemicals" a cikin ma'anar kasuwanci da shari'a na iya haɗawa da cakuda abubuwa masu yawa, saboda samfuran da akayi da ƙayyadaddun fasaha maimakon wasu sinadarai. Misali, man fetur ba sinadarin sinadarai bane ko ma wani cakuda ne: man fetur daban-daban na iya samun sinadarai daban-daban, kamar yadda aka bayyana "gasoline" ta hanyar tushe, kaddarorin da ƙimar octane.

Sunayen da lissafi

Kowane sinadarin sinadarai yana da sunaye ɗaya ko fiye, yawanci ana kiransu bisa ga ka'idojin IUPAC don suna. Sabon tsarin yana amfani da Chemical Abstracts Service (CAS).

An kuma san mahadi da yawa da sunayensu na yau da kullun, masu sauƙi, dayawa daga cikinsu sun riga sun riga sunayen tsarin. Misali, sanannen sukari glucose yanzu ana kiransa 6- (hydroxymethyl) oxane-2,3,4,5-tetrol. Ana kuma bada samfuran halitta da magunguna sunaye masu sauƙi, alal misali mai kashe zafi Naproxen shine sunan da akafi sani da sinadarin sinadarai (S) -6-methoxy-α-methyl-2-naphthaleneacetic acid.

Masana sinadarai akai-akai suna magana ne game da mahaɗan sunadarai ta amfani da Tsarin sunadarai ko Tsarin kwayoyin mahaɗin. An sami cigaba mai ban mamaki a cikin adadin sinadarai da aka haɗa (ko ware), sannan kuma an ruwaito su a cikin wallafe-wallafen kimiyya ta ƙwararrun likitoci a duniya. Yawancin sinadarai masu yawa suna yiwuwa ta hanyar haɗuwa da sinadarai na sanannun sinadarai. Ya zuwa watan Fabrairun 2021, game da "abubuwa miliyan 177 na kwayoyin halitta da inorganic" (ciki har da biopolymers miliyan 68 da aka bayyana-tsarin halitta) suna cikin wallafe-wallafen kimiyya kuma sun yi rajista a cikin bayanan jama'a. Sunayen yawancin waɗannan mahadi galibi basu da mahimmanci kuma saboda haka basu da sauƙin tunawa ko ambaton daidai. Har ila yau, yana da wahala abi su acikin wallafe-wallafen. Ƙungiyoyin duniya dayawa kamar IUPAC da CAS sun fara matakai don sauƙaƙa irin waɗannan ayyukan. CAS tana bada sabis na abstraction na wallafe-wallafen sunadarai, kuma tana bada mai gano lambobi, wanda aka sani da Lambar rajista ta CAS ga kowane sinadarin sinadarai da aka ruwaito a cikin wallafe-walfen sunadarin (kamar mujallu na sunadarai da takardun shaida). An tattara wannan bayanin a matsayin Bayanan bayanai kuma an san shi da alamar abubuwan sinadarai. Sauran tsarin kwamfuta da aka haɓaka don bayanan abu sune: SMILES da International Chemical Identifier ko InChI.

Gano wani sinadarin sinadarai na yau da kullun

Sunan gama gari	Sunan tsari	Tsarin sinadarai	Tsarin sinadarai	Lambar rajista ta CAS	InChI
Alcohol, orethyl alcohol	Ethanol	C2H5OH		[64-17-5]	1/C2H6O/c1-2-3/h3H,2H2,1H3

Keɓewa, tsarkakewa, halayyar, da kuma ganewa

Sau dayawa ana buƙatar ware abu mai tsabta daga cakuda, misali daga tushen halitta (inda samfurin ke ƙunshe da abubuwa masu yawa) ko kuma bayan halayen sunadarai (wanda sau dayawa ke bada cakuda abubuwa masu sinadarai).

Dubi kuma

• Alamar haɗari
• Haɗuwa iri ɗaya da iri ɗaya
• Farashin sinadarai
• Kayan sunadarai da aka keɓe
• Lu'u-lu'u na wuta
• Binciken sinadarai

Haɗin waje

• Media related to Chemical substances at Wikimedia Commons