2024 Tus sau: Elizabeth Oswald | [email protected]. Kawg hloov kho: 2024-01-13 00:07
Al(OH)3 muab cov tuab, dawb, gelatinous precipitate ntawm aluminium hydroxide. Raws li ntau sulfuric acid ntxiv, lub precipitate ntawm Al (OH) 3 dissolves rau daim ntawv soluble Al3+ ions. Thaum kawg, cov crystals ntawm alum raug tshem tawm los ntawm kev daws los ntawm lub tshuab nqus tsev pom thiab ntxuav nrog cawv / dej sib tov.
Dab tsi yog kev sib txuas ntawm alum?
Nyob rau hauv qhov kev sim no, koj yuav tsim ib hom alum hu ua potassium aluminium sulfate dodecahydrate, KAl(SO4)2 •12H 2 O. Koj yuav ua kom cov khoom sib xyaw no los ntawm kev tso cov ions tsim nyog rau hauv ib lub thawv hauv cov kua dej thiab tom qab ntawd evaporate cov dej los tsim cov alum crystals.
Cov roj hluav taws xob dab tsi yog tsim los ntawm kev sib txuas ntawm alum los ntawm Al thiab KOH?
Thaum nws yog xim hlau txhuas los rau hauv kev sib cuag nrog cov dej daws ntawm cov hauv paus muaj zog xws li potassium hydroxide, KOH, nws reacts rau daim ntawvhydrogen gas(FLAMMABLE!) thiab ntsev uas muaj txhuas thiab poov tshuaj ions. reacts rau daim ntawv txhuas hydroxide, Al (OH), thiab potassium sulfate, K SO.
Yuav ua li cas yog tias K + muaj nyob rau hauv cov qauv ntawm alum?
Potassium yog volatilized ntawm qhov kub siab heev ntawm nplaim taws (kwv yees li 1000 ° C) ntawm qhov taw tes nws muab cov xim xiav-ntsuab rau nplaim taws. Tom qab ob peb feeb hauv nplaim taws, sulfur dioxide yuav raug tshem tawm ntawm koj.cov qauv alum, thiab cov khoom siv uas tseem tshuav yuav suav nrog txhuas oxides.
Puas yog alum a precipitate?
Alums tuaj yeem yooj yim tsim los ntawm nag lossis daus los ntawm cov tshuaj aqueous. Hauv kev tsim cov poov tshuaj alum, piv txwv li, aluminium sulfate thiab poov tshuaj sulfate yog yaj hauv dej, thiab tom qab evaporation cov alum crystallizes tawm ntawm cov tshuaj. … Feem ntau alums muaj astringent thiab acid saj.
Pom zoo:
Yuav tsum muaj cua sov hauv nruab nrab txhua lub sijhawm?
Raws li cov kws tshaj lij ntawm Lub Zog Txuag Kev Ntseeg, lub tswv yim nws pheej yig dua kom tso cua sov rau txhua hnub yog qhov lus dab neeg. Lawv paub meej tias muaj cua sov tsuas yog thaum koj xav tau nws yog, nyob rau lub sijhawm ntev, txoj hauv kev zoo tshaj plaws kom txuag hluav taws xob, thiab yog li nyiaj.
Lub xyoo pua twg tau cim qhov pib ntawm lub sijhawm nruab nrab yog vim li cas?
Lo lus nug: Lub xyoo pua twg yog qhov pib ntawm lub sijhawm medieval? Vim li cas? Teb: Ib xyoo pua feem ntau yog coj los ua qhov pib vim tib neeg, kev lag luam, kev coj noj coj ua, kev ntseeg thiab kab lis kev cai tau hloov pauv ntau lub sijhawm xyoo no.
Puas yog nruab nrab phem tshaj qhov nruab nrab?
Yog li ntawd, 'mediocre' yog tsuas yog thiab tsuas yog derogatory, me ntsis hnyav dua li 'qub' thiab hais txog tib yam li 'tsis muaj dab tsi sau hauv tsev'. 'Nruab nrab' yog zoo siv nyob rau hauv nws nruj me ntsis kev paub txog zauv/statistical.
Qhov twg yog qhov txuas txuas txuas txuas ntxiv?
Qhia kom meej tias Uplink Connectivity Monitor tau qhib nyob rau hauv Settings > System Settings > Controller Configuration > Uplink Connectivity Monitor. Kuv yuav ua li cas lov tes taw uplink saib txuas? Txhawm rau lov tes taw "
Thaum qhov nruab nrab ntawm qhov chaw nyob ib sab ntawm lub plaub fab?
Lub plaub fab uas tsim los ntawm kev koom nrog cov midpoints sib law liag ntawm ib lub plaub fab uas nws kab pheeb ces kaum yog congruent yog a rhombus. Thaum qhov nruab nrab ntawm qhov chaw nyob ib sab ntawm plaub fab txuas nrog ntu?
