點解會交換左......係咪要form preacipitate先會咁????
FeCl3+CuSO4---->Cu(Cl)2+Fe(SO4)3??
又得唔得呢???
更新1:
CaO slightly soluble in water??? 咁MgO係咪都係slightly soluble in water???
chem 問題!!!
2008-03-23 3:18 am
點解Pb(NO3)2+Na2SO4------>PbSO4+2NaNO3 呢???
點解會交換左......係咪要form preacipitate先會咁????
FeCl3+CuSO4---->Cu(Cl)2+Fe(SO4)3??
又得唔得呢???
點解會交換左......係咪要form preacipitate先會咁????
FeCl3+CuSO4---->Cu(Cl)2+Fe(SO4)3??
又得唔得呢???
回答 (2)
2008-03-23 3:25 am
✔ 最佳答案
係呀 ppt 先會咁嫁咋.所有 sulphate 都 soluable, 除了 Pb sulphate 同 Ba sulphate
酸, 拿得溶 Ba sulphite 放 SO2, 拿唔溶 Ba sulphate.
2008-03-22 19:27:41 補充：
佢仲寫咗其他一啲唔溶0既普通鹽
2008-03-22 19:38:30 補充：
呀~ 仲有一單嘢好特0既, 就係
1) 所有 Pb halogen 都係溶唔到落 凍水 度. but 熱水 就溶到.
2) 所有 HCO3- 都溶得. (你見唔見 HCO3- 根本就有 一個水 係裏面?)
3) K, Na, 頂多 Ca 0既 carbonate 溶得; 再落 Mg Al 之後的 carbonate 唔溶得.
4) K, Na, Ca, Mg oxide 可以溶落水 form alkali; Al 之後, 開始唔得.
2008-03-24 13:29:56 補充：
CaSO4 都係 insoluble
我都係啱啱先知番
2008-03-24 13:32:12 補充：
即係 sulphate 有 Pb sulphate, Ba sulphate, Ca sulphate 都係 insoluble
參考: Ariato Chemistry A Morden View 3, Ch 20, Ariato Chemistry A Morden View 3, Ch 20, littlesoldier forum
2008-03-23 5:49 pm
CaO is readily soluble in water.
MgO is slightly soluble in water.
對於Alkaline earth metal oxides, 整體而言有以下的tend.
the solubility of Group II metal oxides in water increases down the group.
MgO is slightly soluble in water.
對於Alkaline earth metal oxides, 整體而言有以下的tend.
the solubility of Group II metal oxides in water increases down the group.
參考: 自己
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