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Chemistry > Mechanisms > Flashcards

Mechanisms Flashcards

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1
Q

What is the name of the mechanism when Bromine reacts with an alkene?

A

Electrophillic Addition

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2
Q

The reactants of electrophillic addition reactions?

A

-Alkene
-Bromine
-HBr
-Sulfuric Acid

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3
Q

What is the name of the mechanism when HBr reacts with an alkene?

A

Electrophillic addition

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4
Q

What is the name of the mechanism when Sulfuric acid reacts with an alkene?

A

Electrophillic addition

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5
Q

What is the name of the mechanism when an alkene is formed?

A

Elimination

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6
Q

What is the name of the mechanism when :OH- reacts with a Halogenoalkane(in ethanol)?

A

Elimination

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7
Q

Where does the :OH- come from in an elimination reaction?

A

KOH/Potassium Hydroxide

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8
Q

What is the catalyst for the elimination of Alcohol->Alkene

A

Conc Sulfuric acid or Conc Phosphoric acid

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9
Q

What are the conditions for the hydration of ethene to form an alcohol?

A

-Conc Phosphoric acid
-300°C
-60atm

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10
Q

What are the conditions for an elimination reaction?

A

Dissolved in ethanol

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11
Q

What are the three ions in nucleophilic substitution?

A

-Hydroxide/:OH-
-Cyanide/-NC:
-Ammonia/:NH3

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12
Q

What are the three steps of free radical substitution?

A

1)Initiation (UV light)
2)Propagation
3)Termination

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13
Q

Which molecules undergo nucleophilic addition?

A

-Aldehydes
-Ketones

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14
Q

Why in nucleophilic addition is there a dipole on the C=O?

A

As O is more electronegative so electron cloud is more concentrated on the oxygen

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15
Q

Where does the H+ come from in nucleophilic addition?

A

-When H+ reacts -> Water or Weak acid
-When CN reacts -> Sulfuric acid

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16
Q

What two molecules are used in nucleophilic addition elimination?

A

-Acyl chloride
-Acid Anhydride

17
Q

What are the nucleophiles in Nucleophilic addition-elimination reaction?

A

-Water
-Ammonia
-Alcohols
-Amines

18
Q

Benefits of Acid anhydride over Acyl chloride?

A

-Less vigorous reaction
-Produces carboxylic acid instead of HCl

19
Q

Where is the line drawn from in Electrophillic substitution?

A

The circle in Benzene

20
Q

What is the role of hydroxide ions in an elimination reaction?

A

Base

Chemistry (28 decks)

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