[DSE化學2018]同學準備好DSE CHEM未?

近年多出MC
基本野有inter-chain attraction同埋hydrolysis of polymer chain under acidic/basic medium
其實又唔係特別難既 因為學左既野都好有限

今晚係elective course
教到arrhenius equation

Mini-test

Study the following 2 reactions:

1. RCN + H2O ---> amide
2. C6H12O6 --> C + 6H2O

Are they redox?

Hint: Study the oxidation number of the catenating carbon atom.

你呢2條同識唔識睇carbon係咩oxidation number 完全無關囉龜sir
你真係想教都舉CH3CH2OH -> CH2=CH2 + H2O 係咪redox 啦

Mini-test

Study the following 2 reactions:

1. RCN + H2O ---> amide
2. C6H12O6 --> C + 6H2O

Are they redox?

Hint: Study the oxidation number of the catenating carbon atom.

你呢2條同識唔識睇carbon係咩oxidation number 完全無關囉龜sir
你真係想教都舉CH3CH2OH -> CH2=CH2 + H2O 係咪redox 啦

Rule: Hydrolysis and Dehydration are NOT redox

你咁樣咪又係背野 龜蛇

有d問題
左邊個C個oxidation number -3 右邊個C -1黎

Mini-test

Study the following 2 reactions:

1. RCN + H2O ---> amide
2. C6H12O6 --> C + 6H2O

Are they redox?

Hint: Study the oxidation number of the catenating carbon atom.

你呢2條同識唔識睇carbon係咩oxidation number 完全無關囉龜sir
你真係想教都舉CH3CH2OH -> CH2=CH2 + H2O 係咪redox 啦

Rule: Hydrolysis and Dehydration are NOT redox

你咁樣咪又係背野 龜蛇

你點樣屈到兩粒c係-2 -2
係-3 -1喎ching

Mini-test

Study the following 2 reactions:

1. RCN + H2O ---> amide
2. C6H12O6 --> C + 6H2O

Are they redox?

Hint: Study the oxidation number of the catenating carbon atom.

你呢2條同識唔識睇carbon係咩oxidation number 完全無關囉龜sir
你真係想教都舉CH3CH2OH -> CH2=CH2 + H2O 係咪redox 啦

Rule: Hydrolysis and Dehydration are NOT redox

你咁樣咪又係背野 龜蛇

有d問題
左邊個C個oxidation number -3 右邊個C -1黎

艾維斯哥好勤力

出緊去上堂 到已遲
今日四堂

Hint: Study the oxidation number of the catenating carbon atom.

你呢2條同識唔識睇carbon係咩oxidation number 完全無關囉龜sir
你真係想教都舉CH3CH2OH -> CH2=CH2 + H2O 係咪redox 啦

Rule: Hydrolysis and Dehydration are NOT redox

你咁樣咪又係背野 龜蛇

你點樣屈到兩粒c係-2 -2
係-3 -1喎ching

Try drawing the reaction mechanism

依家唔係講緊dehydration係唔係redox
係果兩粒c 係-3 -1