1. Solubility hauv dej
Solubility:soluble me ntsis, hais txog0.8 g/l(20 degree), ua cov tshuaj acidic me ntsis (ph ≈ 4).
Soluble cov khoom: reactsNrog dej los ua Metavanadate (HVO3) lossis, kom tsawg dua, polyvanate (piv txwv li, h2v4o11), nyob ntawm cov kev xav thiab ph.
V2o {5+ h2o → 2hvo3
Qhov kub nyhuv: Solubility nce nrog nce kub (piv txwv li, txog li 5 g / l ntawm 100 degree).
2. Solubility hauv acids
Muaj zog acids (piv txwv li sulfuric, nitric, hydrochloric):
Yooj yim yaj los ua ib tug vanadate cation (vo 2+) lossis vo 2+ (nyob ntawm cov kua qaub thiab txo cov khoom).
Piv txwv (hauv sulfuric acid):
V2o {{{{1} h2so4 → 2 {2++2} {} h2o
Cov kua qaub tsis muaj zog (piv txwv li, acetic acid):Tsawg dua soluble, yuav tsum muaj cua sov lossis siab ntawm cov kua qaub.
3. Solubility hauv alkalis
Muaj zog alkalis (piv txwv li naoh, koh):
Soluble, ua daim paladates tsis muaj kob (piv txwv li, sodium metavanadate navo3):
V2o {{5+2 na a naoh → 2navo 3+ h2o
Hauv concentrated alkalis, polyvadates (piv txwv li, NA3VO4) tuaj yeem tsim tau.
4. Solubility hauv Organic kuab tshuaj
Insoluble: Yuav luag Insoluble nyob rau hauv cov ethanic cov kuab tshuaj xws li ethanol, ether thiab acetone.
Cov kuab tshuaj tshwj xeeb: Dissolves nyob rau hauv ib co oxygen-muaj cov kuab tshuaj organic (piv txwv li, oxalic acid daws) los ua cov nyom.
5. Yam cuam tshuam rau solubility
PH nqi:
Solubility nce siab heev hauv qab acidic lossis muaj zog alkaline cov xwm txheej thiab txo nyob rau hauv nruab nrab lossis qaug zog acids / alkalis.
Qho so: Cov cua sov feem ntau nce solubility (tshwj xeeb tshaj yog hauv dej).
Redox ib puag ncig: Txo cov kua qaub (piv txwv li, hydrochloric acid) tuaj yeem txo v 5+}} los ntawm kev hloov pauv tus cwj pwm sib cais.
Cov Lus Taw Qhia Siv
Kev sim: Cov kuab tshuaj yuav tsum tau xaiv raws li cov khoom lag luam hom phiaj:
Npaj Vanadate → yaj nrog Alkali.
Tau txais kev daws teeb meem ntawm VO 2+ → yaj nyob rau hauv ib tug muaj zog acid.
Cov Lus Qhia Kev Nyab Xeeb: Kev tshem tawm tuaj yeem ua tau exothermic lossis gassing (piv txwv li, thaum reacting nrog txo cov acids), yog li nws yuav tsum tau nqa tawm thaum muaj pa hluav taws.
