Alkali: Perbedaan antara revisi

Jelajahi riwayat secara interaktif

← Revisi sebelumnya

Konten dihapus Konten ditambahkan

VisualTeks wiki

Revisi per 13 Desember 2014 20.42 sunting JohnThorne (bicara \| kontrib) Pengecualian blokir IP 151.852 suntingan Tidak ada ringkasan suntingan ← Revisi sebelumnya		Revisi terkini sejak 3 Desember 2022 09.58 sunting balikkan Ariyanto (bicara \| kontrib) Pengurus 67.123 suntingan k Bersih-bersih (via JWB)
(11 revisi perantara oleh 6 pengguna tidak ditampilkan)
Baris 1: {{about\|\|tempat di Azerbaijan\|Alçalı~~\|other uses\|~~}} {{Other uses}} '''Alkali''' (dari ~~[[bahasa Arab]]: ''al~~{{Lang-~~qaly''~~ ar\|القلي, القالي }}, ~~“abu~~"abu dari ~~saltwort”~~lumut asin") dalam [[kimia]] adalah suatu [[garam]] [[~~ionik~~ion]]ik [[basa]] dari suatu [[unsur kimia]] [[alkali logam]] atau [[alkali tanah]]. Ada yang mendefinisikan suatu alkali sebagai suatu zat [[basa]] yang larut dalam [[air]]. Larutan alkali mempunyai [[pH]] lebih dari 7,0. <!--The [[adjective]] '''alkaline''' is commonly, and '''alkalescent''' less often, used in [[English language\|English]] as a [[synonym]] for basic, especially for [[soluble]] bases. This broad use of the term is likely to have come about because alkalis were the first bases known to obey the [[acid-base reaction theories\|Arrhenius]] definition of a base, and they are still among the most common bases. ==Etymology== Baris 12 ⟶ 13: * Alkalis are normally [[solubility\|water soluble]], although some like [[barium carbonate]] are only soluble when reacting with an acidic aqueous solution. --> == ~~Beda~~Perbedaan antara alkali dan basa == Istilah "basa" dan "alkali" sering digunakan bergantian, terutama di luar konteks [[kimia]] dan teknik kimia. <!-- There are various definitions for the concept of an alkali. Alkalis are sometimes defined as a subset of the bases. However, two subsets are commonly chosen. * A basic salt of an alkali metal or alkaline earth metal<ref>[http://dictionary.reference.com/search?q=alkali Alkali \| Define Alkali at Dictionary.com]. Dictionary.reference.com. Retrieved on 2012-04-18.</ref> (This includes Mg(OH)<sub>2</sub> but excludes NH<sub>3</sub>.) * Any base that is soluble in water and forms hydroxide ions<ref>[http://www.tiscali.co.uk/reference/encyclopaedia/hutchinson/m0029936.html alkali]. Tiscali.co.uk. Retrieved on 2012-04-18.</ref><ref>[http://www.thefreedictionary.com/alkali ~~alkali – definition~~alkali–definition of alkali by the Free Online Dictionary, Thesaurus and Encyclopedia]. Thefreedictionary.com. Retrieved on 2012-04-18.</ref><ref>[http://web.archive.org/web/20061124183909/http://www.wahyan.edu.hk/paulsir/handout/form4/4-05_Characteriscs_of_alkali.pdf Characteristics of Alkali]. (from L.H.M. Chung ''Integrated Chemistry Today'' pp. 363–365)</ref> or the solution of a base in water.<ref>[http://www.krysstal.com/acidbase.html Acids, Bases and Salts]. KryssTal. Retrieved on 2012-04-18.</ref> (This excludes Mg(OH)<sub>2</sub> but includes NH<sub>3</sub>.) The second subset of bases is also called an "Arrhenius base". Baris 34 ⟶ 36: Soils with pH values higher than 7.3 are usually defined as being alkaline. These soils can occur naturally, due to the presence of alkali salts. Although some plants do prefer slightly basic soil (including vegetables like [[cabbage]] and fodder like [[buffalograss]]), most plants prefer a mildly acidic soil (with pHs between 6.0 and 6.8), and [[alkaline soil]]s can cause problems.<ref>{{cite book\|title=[[Chambers's encyclopaedia]]: a dictionary of universal knowledge, Volume 1\|publisher=J.B. Lippincott & Co\|year=1888\|page=148}}</ref> --> == Danau alkali == Dalam ''[[danau alkali]]'' (atau ''danau soda''), penguapan terkonsentrasi pada garam-garam karbonat alamiah, menghasilkan danau alkali yang sering kali juga asin. Contoh danau alkali: * [[Alkali Lake (Oregon)\|Alkali Lake]], [[Lake County, Oregon]] * [[Baldwin Lake (San Bernardino County, California)\|Baldwin Lake]], [[San Bernardino County, California]] * [[Mono lake]], near [[Owens Valley]] in [[California]] * [[Redberry Lake, Saskatchewan]] <!-- Not Blueberry lake, ref see http://www.pnr-rpn.ec.gc.ca/nature/whp/sanctuaries/dc01s12.en.html --> * [[Summer Lake (Oregon)\|Summer Lake]], [[Lake County, Oregon]] * [[Tramping Lake, Saskatchewan]] * [[Lake Magadi]] di [[Kenya]] * [[Lake Turkana]] in [[Kenya]] (danau alkali terbesar di dunia) * There are also alkali lakes in the outback of [[Australia]]. == Lihat pula == * [[Basa]] * [[Alkali logam]] * [[Alkali tanah]] == Referensi == {{Reflist\|30em}} {{Authority control}} [[Category:Kimia]]▼ ▲[[~~Category~~Kategori:Kimia]]