[DSE化學2017]同學準備好DSE CHEM未?

hess law唔係overall enthalpy change same regardness route of reaction咩
另外想問cycle個題幾分？

Yes
Overall 4/5

連埋definition explanation計數 overall 4/5?

Definition 自己1分
Why 1分
成個cycle 好似4/5

咁多

hess law唔係overall enthalpy change same regardness route of reaction咩
另外想問cycle個題幾分？

Yes
Overall 4/5

連埋definition explanation計數 overall 4/5?

Definition 自己1分
Why 1分
成個cycle 好似4/5

咁多

Yes

hess law唔係overall enthalpy change same regardness route of reaction咩
另外想問cycle個題幾分？

Yes
Overall 4/5

連埋definition explanation計數 overall 4/5?

Definition 自己1分
Why 1分
成個cycle 好似4/5

咁多

好似係
因為成條cycle 包畫圖 問standard conditions 問 enthalpy change of Formation

hess law唔係overall enthalpy change same regardness route of reaction咩
另外想問cycle個題幾分？

Yes
Overall 4/5

連埋definition explanation計數 overall 4/5?

Definition 自己1分
Why 1分
成個cycle 好似4/5

咁多

好似係
因為成條cycle 包畫圖 問standard conditions 問 enthalpy change of Formation

好彩 ...
即係個cycle淨係值2 3分

hess law唔係overall enthalpy change same regardness route of reaction咩
另外想問cycle個題幾分？

Yes
Overall 4/5

連埋definition explanation計數 overall 4/5?

Definition 自己1分
Why 1分
成個cycle 好似4/5

咁多

好似係
因為成條cycle 包畫圖 問standard conditions 問 enthalpy change of Formation

好彩 ...
即係個cycle淨係值2 3分

應該2分
2
1
2

我寫temperature too high cannot be measured

2018 dse考生
如果想攞5以上
應該要點溫
做啲咩去溫

中五應該教到eqm
建議你煲爆dse al acid base eqm
Chem命脈 所有野關佢事

你掌握到eqm 你化學贏人好多

Chem學既野真係有連貫

仲有 現階段中5如果癲到check syllabus 溫
你應該下年爆5**🙏🏿

MC20/36
1B大約要攞到幾多分先有4

我寫temperature too high cannot be measured

佢好似+ve endothermic
點解T too high?

點知high or low

出去補習 某d名師會教佢地快做的技巧
其實係好多都係大學之後做法黎
而且教條友係自己熟晒至教
如果唔係太識就唔好班門弄斧

Eg?

KC denial 中大public health 出黎都可以教chem 我真係無言 睇黎讀nursing 都可以做bio 名師

拎5mc大約啱幾多題
錯左7題 有3條錯眼殘
好頹

睇MC無乜用 總之paper 1 overall 90/120

錯左好多on9野
1b catalytic convertor個條係咪唔可以寫SO2, 唔識串sub..... particulate
仲想問下redox第一條個兩個observation係咩
electrode A可唔可以寫the solution turn from colourless to pink, since the conc. of H+ decrease
我啲fd個個兩題都寫colourless gas bubble evolved

拎5mc大約啱幾多題
錯左7題 有3條錯眼殘
好頹

睇MC無乜用 總之paper 1 overall 90/120

錯左好多on9野
1b catalytic convertor個條係咪唔可以寫SO2, 唔識串sub..... particulate
仲想問下redox第一條個兩個observation係咩
electrode A可唔可以寫the solution turn from colourless to pink, since the conc. of H+ decrease
我啲fd個個兩題都寫colourless gas bubble evolved

particulate 有份喎 寫SO2咪好好地

拎5mc大約啱幾多題
錯左7題 有3條錯眼殘
好頹

睇MC無乜用 總之paper 1 overall 90/120

錯左好多on9野
1b catalytic convertor個條係咪唔可以寫SO2, 唔識串sub..... particulate
仲想問下redox第一條個兩個observation係咩
electrode A可唔可以寫the solution turn from colourless to pink, since the conc. of H+ decrease
我啲fd個個兩題都寫colourless gas bubble evolved

particulate 有份喎 寫SO2咪好好地

但係car exhuast唔係應該冇SO2咩

拎5mc大約啱幾多題
錯左7題 有3條錯眼殘
好頹

睇MC無乜用 總之paper 1 overall 90/120

錯左好多on9野
1b catalytic convertor個條係咪唔可以寫SO2, 唔識串sub..... particulate
仲想問下redox第一條個兩個observation係咩
electrode A可唔可以寫the solution turn from colourless to pink, since the conc. of H+ decrease
我啲fd個個兩題都寫colourless gas bubble evolved

particulate 有份喎 寫SO2咪好好地

但係car exhuast唔係應該冇SO2咩

我都係跟上年mc答案咋

拎5mc大約啱幾多題
錯左7題 有3條錯眼殘
好頹

睇MC無乜用 總之paper 1 overall 90/120

錯左好多on9野
1b catalytic convertor個條係咪唔可以寫SO2, 唔識串sub..... particulate
仲想問下redox第一條個兩個observation係咩
electrode A可唔可以寫the solution turn from colourless to pink, since the conc. of H+ decrease
我啲fd個個兩題都寫colourless gas bubble evolved

particulate 有份喎 寫SO2咪好好地

但係car exhuast唔係應該冇SO2咩

好似唔關事喎 佢問你清除唔到邊種空氣污染物 唔係指定汽車所產生個啲喎

乜撚野叫 state Hess's law

乜撚野叫 state Hess's law

Explain def of Hess law

乜撚野叫 state Hess's law

Hess's Law state that, the enthalpy change of reaction is regardless of the route taken

拎5mc大約啱幾多題
錯左7題 有3條錯眼殘
好頹

睇MC無乜用 總之paper 1 overall 90/120

錯左好多on9野
1b catalytic convertor個條係咪唔可以寫SO2, 唔識串sub..... particulate
仲想問下redox第一條個兩個observation係咩
electrode A可唔可以寫the solution turn from colourless to pink, since the conc. of H+ decrease
我啲fd個個兩題都寫colourless gas bubble evolved

particulate 有份喎 寫SO2咪好好地

但係car exhuast唔係應該冇SO2咩

Good: can remove CO2/NO2 etc which is green house gas
Bad: E-car, electricity supply needed, SO2 still produced from electrical plant