16 年dental median 好似係37
17年升到mbbs咁高
討論下今年分數 利申有報
可能lowest 37
唔撚係掛
（急問）有冇人讀緊中大medic？十分緊急
裂空煎🇯🇵
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唔撚係掛
我係想知alcohol aldehyde acid mixture 內
點解可以aldehyde vapor
因為第一步
Alcohol aldehyde acid degree of solubility 唔同
應該混唔埋咁解
Have vapour because of the heat from Bunsen burner
之後我知
只不過我當初以為aldehyde 唔係太soluble
書都咁寫
唔關事
Not soluable will form 2 layers
Vapour is because of heat
關事
因為not miscible
-> 2 layers
-> heat isn't evenly distributed
我諗個重點係
下面嘅heat嘅強度
影響乜野vapourise
但係not evenly distributed 嗰度唔太明
如果miscible
-> same phase
-> homogeneous mixture
-> heat supply is evenly distributed
-> mixture T is the same
-> 出現到因為Boiling pt difference 而有vapor 做distillation
16 年dental median 好似係37
17年升到mbbs咁高
討論下今年分數 利申有報
可能lowest 37
唔撚係掛
你都幾乎入硬cu med啦
定你dental先A1?
16 年dental median 好似係37
17年升到mbbs咁高
討論下今年分數 利申有報
可能lowest 37
唔撚係掛
你都幾乎入硬cu med啦
定你dental先A1?
因為第一步
Alcohol aldehyde acid degree of solubility 唔同
應該混唔埋咁解
Have vapour because of the heat from Bunsen burner
之後我知
只不過我當初以為aldehyde 唔係太soluble
書都咁寫
唔關事
Not soluable will form 2 layers
Vapour is because of heat
關事
因為not miscible
-> 2 layers
-> heat isn't evenly distributed
我諗個重點係
下面嘅heat嘅強度
影響乜野vapourise
但係not evenly distributed 嗰度唔太明
如果miscible
-> same phase
-> homogeneous mixture
-> heat supply is evenly distributed
-> mixture T is the same
-> 出現到因為Boiling pt difference 而有vapor 做distillation
Vice Versa for heterogeneous mixture (2 different layers)
16 年dental median 好似係37
17年升到mbbs咁高
討論下今年分數 利申有報
可能lowest 37
唔撚係掛
你都幾乎入硬cu med啦
定你dental先A1?
Oh my bad
16 年dental median 好似係37
17年升到mbbs咁高
討論下今年分數 利申有報
可能lowest 37
唔撚係掛
你都幾乎入硬cu med啦
定你dental先A1?
thats why 我咁驚cu medic 擺A2會reject 我又唔係特別高分
不過問多左幾個師吧好似係我擔心左
16 年dental median 好似係37
17年升到mbbs咁高
討論下今年分數 利申有報
可能lowest 37
唔撚係掛
你都幾乎入硬cu med啦
定你dental先A1?
thats why 我咁驚cu medic 擺A2會reject 我又唔係特別高分
不過問多左幾個師吧好似係我擔心左
多
討論下今年分數 利申有報
可能lowest 37
唔撚係掛
你都幾乎入硬cu med啦
定你dental先A1?
thats why 我咁驚cu medic 擺A2會reject 我又唔係特別高分
不過問多左幾個師吧好似係我擔心左
多
牙你老母
日日聞口氣啦
Primary alcohol to acid唔係reflux??
呢個過程如果想要acid就reflux
但想拎aldehyde 就distillation
咁你嘅問題係？
出左問題
Aldehyde 應該 not miscible with sol, 但用distillation 條件就係要miscible sol
我咪嘗試諗點解
Aldehyde soluble in water lol
If the carbon chain is short
As aldehyde can not form hydrogen bond to itself
But it can form hydrogen bond with water molecules so it is water soluble
但degree 應該無alcohol and acid咁大？
Soluble in water because dipole dipole attraction
Aldehyde polar
H2O polar
Comparable in strength
Therefore solvable in water
太耐冇溫書唔記得咗點解long chain cannot
再解一定要用hydrogen bond 解 因為hydrogen bond 強度遠遠大過dipole dipole
Carbon chain hydrophobic and lipophilic
Carbon chain prefer attract each other. Repel water and weaken or interrupt the h bond
(like dissolve like ）
可能lowest 37
唔撚係掛
你都幾乎入硬cu med啦
定你dental先A1?
thats why 我咁驚cu medic 擺A2會reject 我又唔係特別高分
不過問多左幾個師吧好似係我擔心左
多
牙你老母
日日聞口氣啦
要幾分先夠讀dental
呢個過程如果想要acid就reflux
但想拎aldehyde 就distillation
咁你嘅問題係？
出左問題
Aldehyde 應該 not miscible with sol, 但用distillation 條件就係要miscible sol
我咪嘗試諗點解
Aldehyde soluble in water lol
If the carbon chain is short
As aldehyde can not form hydrogen bond to itself
But it can form hydrogen bond with water molecules so it is water soluble
但degree 應該無alcohol and acid咁大？
Soluble in water because dipole dipole attraction
Aldehyde polar
H2O polar
Comparable in strength
Therefore solvable in water
太耐冇溫書唔記得咗點解long chain cannot
再解一定要用hydrogen bond 解 因為hydrogen bond 強度遠遠大過dipole dipole
Carbon chain hydrophobic and lipophilic
Carbon chain prefer attract each other. Repel water and weaken or interrupt the h bond
(like dissolve like ）
Oh yes
Long Carbon chain disturb formation of h bond
討論下今年分數 利申有報
可能lowest 37
唔撚係掛
你都幾乎入硬cu med啦
定你dental先A1?
thats why 我咁驚cu medic 擺A2會reject 我又唔係特別高分
不過問多左幾個師吧好似係我擔心左
多
你7科幾多？？
可能lowest 37
唔撚係掛
你都幾乎入硬cu med啦
定你dental先A1?
thats why 我咁驚cu medic 擺A2會reject 我又唔係特別高分
不過問多左幾個師吧好似係我擔心左
多
牙你老母
日日聞口氣啦
要幾分先夠讀dental
4+2 35相信已經唔得
36啦
唔撚係掛
你都幾乎入硬cu med啦
定你dental先A1?
thats why 我咁驚cu medic 擺A2會reject 我又唔係特別高分
不過問多左幾個師吧好似係我擔心左
多
牙你老母
日日聞口氣啦
要幾分先夠讀dental
I don't know
討論下今年分數 利申有報
可能lowest 37
唔撚係掛
你都幾乎入硬cu med啦
定你dental先A1?
thats why 我咁驚cu medic 擺A2會reject 我又唔係特別高分
不過問多左幾個師吧好似係我擔心左
多
你7科幾多？？
[url]42[/url]
討論下今年分數 利申有報
可能lowest 37
唔撚係掛
你都幾乎入硬cu med啦
定你dental先A1?
thats why 我咁驚cu medic 擺A2會reject 我又唔係特別高分
不過問多左幾個師吧好似係我擔心左
多
你7科幾多？？
[url]42[/url]
你都幾乎入硬cu med啦
定你dental先A1?
thats why 我咁驚cu medic 擺A2會reject 我又唔係特別高分
不過問多左幾個師吧好似係我擔心左
多
你7科幾多？？
42
我日日嘆淫腳
因為第一步
Alcohol aldehyde acid degree of solubility 唔同
應該混唔埋咁解
Have vapour because of the heat from Bunsen burner
之後我知
只不過我當初以為aldehyde 唔係太soluble
書都咁寫
唔關事
Not soluable will form 2 layers
Vapour is because of heat
關事
因為not miscible
-> 2 layers
-> heat isn't evenly distributed
我諗個重點係
下面嘅heat嘅強度
影響乜野vapourise
但係not evenly distributed 嗰度唔太明
如果miscible
-> same phase
-> homogeneous mixture
-> heat supply is evenly distributed
-> mixture T is the same
-> 出現到因為Boiling pt difference 而有vapor 做distillation
搞咁大輪野 根本係有b.p. Difference 先分到
兩隻野唔miscible 我用solvent extraction
唔會貪得意用distill
就算唔miscible 理論都可以照用
你都幾乎入硬cu med啦
定你dental先A1?
thats why 我咁驚cu medic 擺A2會reject 我又唔係特別高分
不過問多左幾個師吧好似係我擔心左
多
你7科幾多？？
42
我日日嘆淫腳
你去做婦科聖手啦
Have vapour because of the heat from Bunsen burner
之後我知
只不過我當初以為aldehyde 唔係太soluble
書都咁寫
唔關事
Not soluable will form 2 layers
Vapour is because of heat
關事
因為not miscible
-> 2 layers
-> heat isn't evenly distributed
我諗個重點係
下面嘅heat嘅強度
影響乜野vapourise
但係not evenly distributed 嗰度唔太明
如果miscible
-> same phase
-> homogeneous mixture
-> heat supply is evenly distributed
-> mixture T is the same
-> 出現到因為Boiling pt difference 而有vapor 做distillation
搞咁大輪野 根本係有b.p. Difference 先分到
兩隻野唔miscible 我用solvent extraction
唔會貪得意用distill
就算唔miscible 理論都可以照用
係 所以我當初信書諗唔太明點解用distillation
Distillation 用到 有impurities 因為有undesired vapors
thats why 我咁驚cu medic 擺A2會reject 我又唔係特別高分
不過問多左幾個師吧好似係我擔心左
多
你7科幾多？？
42
我日日嘆淫腳
你去做婦科聖手啦
日日聞臭口 好快鼻有事
thats why 我咁驚cu medic 擺A2會reject 我又唔係特別高分
不過問多左幾個師吧好似係我擔心左
多
你7科幾多？？
42
我日日嘆淫腳
你去做婦科聖手啦
日日聞臭口 好快鼻有事
你捱夜捱到心肝脾肺腎有事都未到我鼻有事
你7科幾多？？
42
我日日嘆淫腳
你去做婦科聖手啦
日日聞臭口 好快鼻有事
你捱夜捱到心肝脾肺腎有事都未到我鼻有事
駁唔到 屌..
咁一齊有事囉