[DSE化學2019]同學準備好DSE CHEM未? (2)
化學艾維斯
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heat為左remove一部分solvent
巴打 想問問 如果Electrolysis嘅electrode唔係 Inert Electrode 而係 Metal Electrode 會有咩影響？
anode用non inert electrode會參與discharge
cathode用specific metal (e.g. Hg)都可以有影響
cathode用specific metal (e.g. Hg)都可以有影響
Cathode係唔係得 Hg/Na 個reaction 係 in syl 其他都out syl?
yes
is barium hydroxide alkaline or an alkali???
actualy whether all metal hydroxides and oxides are classified as alkaline?
alkali
alkalis are always alkaline
but metal hydroxides and oxides are insouluble burrrr not soluble bases sin wui classify as alkali???
insoluble bases are basic
點解pet可以用黎裝soft drink？pet哈會比acid break down咩
點解pet可以用黎裝soft drink？pet唔會比acid break down咩
H+少 溫度低 hydrolysis會好慢
好緊張
一樣 感覺宜家溫咩都唔入腦
感覺宜家溫咩都唔入腦巴打 想問 cyclo organic compound 需唔需要識畫？
要點畫？
要點畫？
仲想問問 如果見到唔識嘅compound 要點知佢係唔係planar 係唔係non-polar?
想問paracetamol 同salicyclic acid 使唔使記個structure
btw thanks 之前答我d 巴打
btw thanks 之前答我d 巴打
簡單既都要 睇返pp
估返個3D shape
睇下可唔可以cancel out dipole moment
睇下可唔可以cancel out dipole moment
salicyclic acid最好認得
係咪即係peak with the highest m/z, indicates heaviest ion?