（急問）有冇人讀緊中大medic？十分緊急

其實dse Chem 我其實諗左好多postulates

但根本prove唔到 好似好9up

得閒問下我囉 識既教下你
見你有心讀醫

唔介意想問一問你

Eg.
Oxidation of primary alcohol to carbonxylic acid

過程中有機會出aldehyde, 教科書教用distillation

但我之前細心諗一諗，將solubility x idea of distillation cross諗諗

1. alcohol and carbonxylic acid should be more soluble than aldehyde if we consider the no of carbon in the main carbon skeleton is ~4-5

2. The condition of distillation is that the solution itself is miscible with each other

3. 應該aldehyde is not miscible with the aqueous solution

我就諗：
會唔會關
1. degree of solubility
2. Amount of aldehyde produced as compared with total amount of aq sol

-> Since the fresh amount of aldehyde produced in the course of oxidation is significantly small as compared to the total amount of aqueous sol
-> the amount of aldehyde produced is soluble at that moment
-> miscible with the sol
-> possible to extract by distillation

-> since there is a continuous heating
-> continuous extraction of aldehyde by distillation is possible

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

其實dse Chem 我其實諗左好多postulates

但根本prove唔到 好似好9up

得閒問下我囉 識既教下你
見你有心讀醫

唔介意想問一問你

Eg.
Oxidation of primary alcohol to carbonxylic acid

過程中有機會出aldehyde, 教科書教用distillation

但我之前細心諗一諗，將solubility x idea of distillation cross諗諗

1. alcohol and carbonxylic acid should be more soluble than aldehyde if we consider the no of carbon in the main carbon skeleton is ~4-5

2. The condition of distillation is that the solution itself is miscible with each other

3. 應該aldehyde is not miscible with the aqueous solution

我就諗：
會唔會關
1. degree of solubility
2. Amount of aldehyde produced as compared with total amount of aq sol

-> Since the fresh amount of aldehyde produced in the course of oxidation is significantly small as compared to the total amount of aqueous sol
-> the amount of aldehyde produced is soluble at that moment
-> miscible with the sol
-> possible to extract by distillation

-> since there is a continuous heating
-> continuous extraction of aldehyde by distillation is possible

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

但做distillation嘅其實係alcohol喎
成件事係alcohol heat到咁上下會oxidise做aldehyde
然後再用上面個溫度計確認個vapour係aldehyde
所以應該冇問題？

其實dse Chem 我其實諗左好多postulates

但根本prove唔到 好似好9up

得閒問下我囉 識既教下你
見你有心讀醫

唔介意想問一問你

Eg.
Oxidation of primary alcohol to carbonxylic acid

過程中有機會出aldehyde, 教科書教用distillation

但我之前細心諗一諗，將solubility x idea of distillation cross諗諗

1. alcohol and carbonxylic acid should be more soluble than aldehyde if we consider the no of carbon in the main carbon skeleton is ~4-5

2. The condition of distillation is that the solution itself is miscible with each other

3. 應該aldehyde is not miscible with the aqueous solution

我就諗：
會唔會關
1. degree of solubility
2. Amount of aldehyde produced as compared with total amount of aq sol

-> Since the fresh amount of aldehyde produced in the course of oxidation is significantly small as compared to the total amount of aqueous sol
-> the amount of aldehyde produced is soluble at that moment
-> miscible with the sol
-> possible to extract by distillation

-> since there is a continuous heating
-> continuous extraction of aldehyde by distillation is possible

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？

應該唔尻係咁
你地dse 學既 dichromate 同 permanganate 都係strong oxidising agent 全部上哂acid
Alcohol->oxidise 左一次就變aldehyde/ketone
但ketone 無alpha hydrogen 上唔到 acid
Aldehyde 上到 因為有alpha hydrogen 次後就會再上 唔會停係 aldehyde 到 (intermediate嚟）唔selective 架
要停係aldehyde 就要用 pcc

得閒問下我囉 識既教下你
見你有心讀醫

唔介意想問一問你

Eg.
Oxidation of primary alcohol to carbonxylic acid

過程中有機會出aldehyde, 教科書教用distillation

但我之前細心諗一諗，將solubility x idea of distillation cross諗諗

1. alcohol and carbonxylic acid should be more soluble than aldehyde if we consider the no of carbon in the main carbon skeleton is ~4-5

2. The condition of distillation is that the solution itself is miscible with each other

3. 應該aldehyde is not miscible with the aqueous solution

我就諗：
會唔會關
1. degree of solubility
2. Amount of aldehyde produced as compared with total amount of aq sol

-> Since the fresh amount of aldehyde produced in the course of oxidation is significantly small as compared to the total amount of aqueous sol
-> the amount of aldehyde produced is soluble at that moment
-> miscible with the sol
-> possible to extract by distillation

-> since there is a continuous heating
-> continuous extraction of aldehyde by distillation is possible

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

但做distillation嘅其實係alcohol喎
成件事係alcohol heat到咁上下會oxidise做aldehyde
然後再用上面個溫度計確認個vapour係aldehyde
所以應該冇問題？

有錯屌細力啲

其實dse Chem 我其實諗左好多postulates

但根本prove唔到 好似好9up

得閒問下我囉 識既教下你
見你有心讀醫

唔介意想問一問你

Eg.
Oxidation of primary alcohol to carbonxylic acid

過程中有機會出aldehyde, 教科書教用distillation

但我之前細心諗一諗，將solubility x idea of distillation cross諗諗

1. alcohol and carbonxylic acid should be more soluble than aldehyde if we consider the no of carbon in the main carbon skeleton is ~4-5

2. The condition of distillation is that the solution itself is miscible with each other

3. 應該aldehyde is not miscible with the aqueous solution

我就諗：
會唔會關
1. degree of solubility
2. Amount of aldehyde produced as compared with total amount of aq sol

-> Since the fresh amount of aldehyde produced in the course of oxidation is significantly small as compared to the total amount of aqueous sol
-> the amount of aldehyde produced is soluble at that moment
-> miscible with the sol
-> possible to extract by distillation

-> since there is a continuous heating
-> continuous extraction of aldehyde by distillation is possible

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？

應該唔尻係咁
你地dse 學既 dichromate 同 permanganate 都係strong oxidising agent 全部上哂acid
Alcohol->oxidise 左一次就變aldehyde/ketone
但ketone 無alpha hydrogen 上唔到 acid
Aldehyde 上到 因為有alpha hydrogen 次後就會再上 唔會停係 aldehyde 到 (intermediate嚟）唔selective 架
要停係aldehyde 就要用 pcc

嘩 屌
Dse害人不淺

其實dse Chem 我其實諗左好多postulates

但根本prove唔到 好似好9up

得閒問下我囉 識既教下你
見你有心讀醫

唔介意想問一問你

Eg.
Oxidation of primary alcohol to carbonxylic acid

過程中有機會出aldehyde, 教科書教用distillation

但我之前細心諗一諗，將solubility x idea of distillation cross諗諗

1. alcohol and carbonxylic acid should be more soluble than aldehyde if we consider the no of carbon in the main carbon skeleton is ~4-5

2. The condition of distillation is that the solution itself is miscible with each other

3. 應該aldehyde is not miscible with the aqueous solution

我就諗：
會唔會關
1. degree of solubility
2. Amount of aldehyde produced as compared with total amount of aq sol

-> Since the fresh amount of aldehyde produced in the course of oxidation is significantly small as compared to the total amount of aqueous sol
-> the amount of aldehyde produced is soluble at that moment
-> miscible with the sol
-> possible to extract by distillation

-> since there is a continuous heating
-> continuous extraction of aldehyde by distillation is possible

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

得閒問下我囉 識既教下你
見你有心讀醫

唔介意想問一問你

Eg.
Oxidation of primary alcohol to carbonxylic acid

過程中有機會出aldehyde, 教科書教用distillation

但我之前細心諗一諗，將solubility x idea of distillation cross諗諗

1. alcohol and carbonxylic acid should be more soluble than aldehyde if we consider the no of carbon in the main carbon skeleton is ~4-5

2. The condition of distillation is that the solution itself is miscible with each other

3. 應該aldehyde is not miscible with the aqueous solution

我就諗：
會唔會關
1. degree of solubility
2. Amount of aldehyde produced as compared with total amount of aq sol

-> Since the fresh amount of aldehyde produced in the course of oxidation is significantly small as compared to the total amount of aqueous sol
-> the amount of aldehyde produced is soluble at that moment
-> miscible with the sol
-> possible to extract by distillation

-> since there is a continuous heating
-> continuous extraction of aldehyde by distillation is possible

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？

其實dse Chem 我其實諗左好多postulates

但根本prove唔到 好似好9up

得閒問下我囉 識既教下你
見你有心讀醫

唔介意想問一問你

Eg.
Oxidation of primary alcohol to carbonxylic acid

過程中有機會出aldehyde, 教科書教用distillation

但我之前細心諗一諗，將solubility x idea of distillation cross諗諗

1. alcohol and carbonxylic acid should be more soluble than aldehyde if we consider the no of carbon in the main carbon skeleton is ~4-5

2. The condition of distillation is that the solution itself is miscible with each other

3. 應該aldehyde is not miscible with the aqueous solution

我就諗：
會唔會關
1. degree of solubility
2. Amount of aldehyde produced as compared with total amount of aq sol

-> Since the fresh amount of aldehyde produced in the course of oxidation is significantly small as compared to the total amount of aqueous sol
-> the amount of aldehyde produced is soluble at that moment
-> miscible with the sol
-> possible to extract by distillation

-> since there is a continuous heating
-> continuous extraction of aldehyde by distillation is possible

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？

應該唔尻係咁
你地dse 學既 dichromate 同 permanganate 都係strong oxidising agent 全部上哂acid
Alcohol->oxidise 左一次就變aldehyde/ketone
但ketone 無alpha hydrogen 上唔到 acid
Aldehyde 上到 因為有alpha hydrogen 次後就會再上 唔會停係 aldehyde 到 (intermediate嚟）唔selective 架
要停係aldehyde 就要用 pcc

我覺得成件事係咁
Alcohol oxidise一次變aldehyde
如果用reflux
Volatile substance are kept inside
所以繼續force aldehyde do oxidation and becomes acid
如果用distillation
而我哋又用temp of vapour to confirm that it's aldehyde
因為distillation set up didn't prevent loss of vapour
Aldehyde就唔會繼續攞返去俾人oxidise
反而會變返liquid form

唔介意想問一問你

Eg.
Oxidation of primary alcohol to carbonxylic acid

過程中有機會出aldehyde, 教科書教用distillation

但我之前細心諗一諗，將solubility x idea of distillation cross諗諗

1. alcohol and carbonxylic acid should be more soluble than aldehyde if we consider the no of carbon in the main carbon skeleton is ~4-5

2. The condition of distillation is that the solution itself is miscible with each other

3. 應該aldehyde is not miscible with the aqueous solution

我就諗：
會唔會關
1. degree of solubility
2. Amount of aldehyde produced as compared with total amount of aq sol

-> Since the fresh amount of aldehyde produced in the course of oxidation is significantly small as compared to the total amount of aqueous sol
-> the amount of aldehyde produced is soluble at that moment
-> miscible with the sol
-> possible to extract by distillation

-> since there is a continuous heating
-> continuous extraction of aldehyde by distillation is possible

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

但做distillation嘅其實係alcohol喎
成件事係alcohol heat到咁上下會oxidise做aldehyde
然後再用上面個溫度計確認個vapour係aldehyde
所以應該冇問題？

有錯屌細力啲

我係想知alcohol aldehyde acid mixture 內
點解可以aldehyde vapor

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

但做distillation嘅其實係alcohol喎
成件事係alcohol heat到咁上下會oxidise做aldehyde
然後再用上面個溫度計確認個vapour係aldehyde
所以應該冇問題？

有錯屌細力啲

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

唔介意想問一問你

Eg.
Oxidation of primary alcohol to carbonxylic acid

過程中有機會出aldehyde, 教科書教用distillation

但我之前細心諗一諗，將solubility x idea of distillation cross諗諗

1. alcohol and carbonxylic acid should be more soluble than aldehyde if we consider the no of carbon in the main carbon skeleton is ~4-5

2. The condition of distillation is that the solution itself is miscible with each other

3. 應該aldehyde is not miscible with the aqueous solution

我就諗：
會唔會關
1. degree of solubility
2. Amount of aldehyde produced as compared with total amount of aq sol

-> Since the fresh amount of aldehyde produced in the course of oxidation is significantly small as compared to the total amount of aqueous sol
-> the amount of aldehyde produced is soluble at that moment
-> miscible with the sol
-> possible to extract by distillation

-> since there is a continuous heating
-> continuous extraction of aldehyde by distillation is possible

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

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

但做distillation嘅其實係alcohol喎
成件事係alcohol heat到咁上下會oxidise做aldehyde
然後再用上面個溫度計確認個vapour係aldehyde
所以應該冇問題？

有錯屌細力啲

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

得閒問下我囉 識既教下你
見你有心讀醫

唔介意想問一問你

Eg.
Oxidation of primary alcohol to carbonxylic acid

過程中有機會出aldehyde, 教科書教用distillation

但我之前細心諗一諗，將solubility x idea of distillation cross諗諗

1. alcohol and carbonxylic acid should be more soluble than aldehyde if we consider the no of carbon in the main carbon skeleton is ~4-5

2. The condition of distillation is that the solution itself is miscible with each other

3. 應該aldehyde is not miscible with the aqueous solution

我就諗：
會唔會關
1. degree of solubility
2. Amount of aldehyde produced as compared with total amount of aq sol

-> Since the fresh amount of aldehyde produced in the course of oxidation is significantly small as compared to the total amount of aqueous sol
-> the amount of aldehyde produced is soluble at that moment
-> miscible with the sol
-> possible to extract by distillation

-> since there is a continuous heating
-> continuous extraction of aldehyde by distillation is possible

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？

應該唔尻係咁
你地dse 學既 dichromate 同 permanganate 都係strong oxidising agent 全部上哂acid
Alcohol->oxidise 左一次就變aldehyde/ketone
但ketone 無alpha hydrogen 上唔到 acid
Aldehyde 上到 因為有alpha hydrogen 次後就會再上 唔會停係 aldehyde 到 (intermediate嚟）唔selective 架
要停係aldehyde 就要用 pcc

嘩 屌
Dse害人不淺

都唔係錯
係會上aldehyde 但之後會再上acid
Wiki 下就知
但唔記得dichromate 會唔會係aldehyde 停
好似唔會 要找書先知
Permanganate 肯定會

16 年dental median 好似係37

17年升到mbbs咁高

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

但做distillation嘅其實係alcohol喎
成件事係alcohol heat到咁上下會oxidise做aldehyde
然後再用上面個溫度計確認個vapour係aldehyde
所以應該冇問題？

有錯屌細力啲

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

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

但做distillation嘅其實係alcohol喎
成件事係alcohol heat到咁上下會oxidise做aldehyde
然後再用上面個溫度計確認個vapour係aldehyde
所以應該冇問題？

有錯屌細力啲

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

orchem大學無用唔記得晒
係得計數related嘅野仲記得

但做distillation嘅其實係alcohol喎
成件事係alcohol heat到咁上下會oxidise做aldehyde
然後再用上面個溫度計確認個vapour係aldehyde
所以應該冇問題？

有錯屌細力啲

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

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

orchem大學無用唔記得晒
係得計數related嘅野仲記得

其實鍾意chem

唔介意想問一問你

Eg.
Oxidation of primary alcohol to carbonxylic acid

過程中有機會出aldehyde, 教科書教用distillation

但我之前細心諗一諗，將solubility x idea of distillation cross諗諗

1. alcohol and carbonxylic acid should be more soluble than aldehyde if we consider the no of carbon in the main carbon skeleton is ~4-5

2. The condition of distillation is that the solution itself is miscible with each other

3. 應該aldehyde is not miscible with the aqueous solution

我就諗：
會唔會關
1. degree of solubility
2. Amount of aldehyde produced as compared with total amount of aq sol

-> Since the fresh amount of aldehyde produced in the course of oxidation is significantly small as compared to the total amount of aqueous sol
-> the amount of aldehyde produced is soluble at that moment
-> miscible with the sol
-> possible to extract by distillation

-> since there is a continuous heating
-> continuous extraction of aldehyde by distillation is possible

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？

你可以咁講 但全部都溶係水

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？

你可以咁講 但全部都溶係水

Ai diu
書又話唔太溶

有錯屌細力啲

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

所以會出現vapor 唔係你理想T出到既vapor

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

有錯屌細力啲

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