
ppt 沉澱物表,最精簡易明易記,記熟可以入考場,未記熟唔好入考場。每年最少出20分
Anion | ✓ | ✘ | |
NO3- | All | ||
HCO3- | |||
OH- | Ba2+ | Group I NH4+ | |
O2- | |||
CO32- | |||
SO42- | Pb2+, Ca2+, Ba2+ | ||
X- (halogen) | Ag+, Pb2+ | ||
小練習
判斷以下哪個物質是可溶於水 (答案在最下)
Which of the following substances are soluble in water?
1. CaCl2 PbSO4
2. MgCO3 K2O
3. (NH4)2CO3 BaO
4. ZnO Fe(NO3)3
5. KHCO3 CuSO4
答案 answer
1. CaCl2 ✓ PbSO4
2. MgCO3 K2O ✓
3. (NH4)2CO3 ✓ BaO
4. ZnO Fe(NO3)3 ✓
5. KHCO3 ✓ CuSO4 ✓
12 留言
Is BaO soluble or not? thanks
回覆刪除soluble
刪除what is the VII in the 表? thx a lot
回覆刪除Cl-,Br-,I-等等
刪除It refers to Group seven elements(halides)
刪除is ammonium carbonate soluble ?
回覆刪除YES
刪除linked to ammonium is soluble..
回覆刪除X- is a more general notation for halide...
回覆刪除Yes, I am just worried that they don't know X refer to halogen
刪除HCO32- should be HCO3-
回覆刪除really
刪除