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Quiz von stevbarretto, aktualisiert more than 1 year ago
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Erstellt von stevbarretto
vor fast 11 Jahre
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Frage 1
Frage
Aldehydes and Ketones contain which functional group?
Antworten
-
-OH
-
Benzene ring
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C=O
Frage 2
Frage
Of these compounds with comparable relative molecular mass, which has the higher boiling point?
Antworten
-
Alcohols
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Alkanes
-
Carbonyl compounds
Frage 3
Frage
Tick which answers are true
Antworten
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Shorter chain aldehydes and ketones mix completely with water
-
Carbonyl compounds become more soluble as chain length increases
-
Carbonyl compounds become less soluble as chain length increases
-
Methanal is gas at room temperature
-
Methanal is liquid at room temperature
-
Short chain aldehydes and ketones are pleasant smelling liquids
-
Short chain aldehydes and ketones are pleasant smelling gases
Frage 4
Frage
Which reactions commonly occur with carbonyl compounds?
Antworten
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Electrophilic addition
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Nucleophilic substitution
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Nucleophilic addition
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Redox
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Neutralisation
Frage 5
Frage
Reactions of Aldehydes and Ketones with Hydrogen Cyanide (:CN-) produce what?
Antworten
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Carboxylic acids
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Amines
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Amides
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N-Substituted Amides
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Hydroxynitriles
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Esters
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Alcohols
Frage 6
Frage
A nucleophilic reaction produces a racemic mixture when a nucleophile attacks which of these?
Antworten
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A symmetrical Ketone
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An Aldehyde
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An unsymmetrical Ketone
Frage 7
Frage
What does acidified potassium dichromate do to aldehydes?
Antworten
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Oxidise to ester
-
Reduce to ester
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Oxidise to alcohol
-
Reduce to alcohol
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Oxidise to carboxylic acid
-
Reduce to carboxylic acid
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Nothing
Frage 8
Frage
What does acidified potassium dichromate do to ketones?
Antworten
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Oxidise to ester
-
Reduce to ester
-
Oxidise to carboxylic acid
-
Reduce to carboxylic acid
-
Oxidise to alcohol
-
Reduce to alcohol
-
Nothing
Frage 9
Frage
Colour of Fehlings solution?
Antworten
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Green
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Orange
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Red
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Brown
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Pink
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Blue
Frage 10
Frage
When an aldehyde is warmed with Fehlings solution a precipitate is formed. What colour?
Antworten
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Red
-
Green
-
Blue
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Orange
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Yellow
-
Pink
-
Black
Frage 11
Frage
When an aldehyde is warmed with Tollens reagent __________ is formed
Antworten
-
Metallic silver
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Red precipitate
-
Blue precipitate
Frage 12
Frage
Reducing agents (e.g. NaBH4) can reduce aldehydes and ketones to ____________
Antworten
-
Carboxylic acids
-
Esters
-
Alcohols
-
Alkanes
-
Alkenes
Frage 13
Frage
Reducing agent sodium tetrahydridoborate(III) generates which nucleophile?
Antworten
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-F
-
-OH
-
-H
-
-CH3
-
-NH2
Frage 14
Frage
Benzene ring with carboxylic acid group attached is called..?
Antworten
-
Phenylcarboxylic acid
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Carboxylbenzoic acid
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Benzenecarboxylic acid
Frage 15
Frage
Carboxylic acids are completely soluble in water. (Up to C4 only)
Antworten
- True
- False
Frage 16
Frage
Carboxylic acids have lower melting points than alkanes of similar relative molecular mass
Antworten
- True
- False
Frage 17
Antworten
-
Colour
-
Boiling point
-
Viscocity
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Electronegativity
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Amounts
-
Melting Points
Frage 18
Frage
Glacial ethanoic acid is...?
Antworten
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Cooler
-
Pure ethanoic acid
-
Ethanoic acid from glaciers
Frage 19
Frage
How to name esters?
Antworten
-
Group attached to oxygen comes first followed by R-COO
-
R-COO comes first and the group attached to oxygen comes last
Frage 20
Frage
Which has pleasant fruity smells?
Antworten
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Long chain esters
-
Short chain esters
Frage 21
Frage
The H in R-COOH (carbox. acid) can be lost as H+ leaving [R-COO]- what is this ion called
Antworten
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Carboxyl ion
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Carboxylate ion
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Carboxilic ion
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Carboxylic acid ion
Frage 22
Frage
How to distinguish between carboxylic acids and other organic compounds?
Antworten
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React with water
-
React with sodium hydrogencarbonate
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React with potassium dichromate
Frage 23
Frage
Ionic salts formed from carboxylic acids donating protons are called? (e.g. Ethanoic Acid + Sodium Hydroxide -> *Sodium Ethanoate* + Water)
Antworten
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Carboxyls
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Carboxylates
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Carboxylic salts
-
Carboxyl salt
Frage 24
Frage
Esters are formed in which reaction?
Antworten
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Alcohol + Ketone
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Alcohol + Aldehyde
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Aldehyde + Ketone
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Alcohol + Carboxylic Acid
-
Carboxylic Acid + Aldehyde
-
Carboxylic Acid + Ketone
-
Carboxylic Acid + Alkene
Frage 25
Frage
This reaction (sped up by a strong acid catalyst) forms............?
Antworten
-
Non equilibrium mixture
-
An equilibrium mixture
Frage 26
Frage
_____(1)______ is attacked by water acting as a _______(2)______ in the hydrolysis of esters
Antworten
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R group
-
R' group
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Carbonyl Oxygen
-
Carbonyl Carbon
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Strong nucleophile
-
Weak nucleophile
-
Weak electrophile
-
Strong base
-
Weak base
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Weak acid
Frage 27
Frage
Equilibrium mixture of the hydrolysis of esters contains which of these..?
Antworten
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Alcohol
-
Ester
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Base
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Acid
-
Water
-
CO2
Frage 28
Frage
Fats and oils can be hydrolysed by boiling with NaOH to produce?
Antworten
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Water
-
CO2
-
Glycerol
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Sodium Salts
Frage 29
Frage
Salts formed from hydrolysis of fats and oils using NaOH are used in?
Antworten
-
Soaps
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Paint
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Sun cream
Frage 30
Antworten
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Aryl
-
Methyl
-
Acyl
-
Carbonyl
Frage 31
Frage
Esters, Acid Chlorides and Acid Anhydrides are examples of?
Antworten
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Acyl derivatives
-
Acid derivatives
Frage 32
Frage
Acyl chlorides and acid anhydrides are bad acylating agents
Antworten
- True
- False
Frage 33
Frage
Acid chlorides are more reactive than acid anhydrides
Antworten
- True
- False
Frage 34
Frage
Acyl Chlorides and Acid Anhydrides react with the following nucleophiles but in which order of reactivity?
Antworten
-
Primary Amine>Ammonia>Alcohol>Water
-
Water>Primary Amine>Alcohol>Ammonia
-
Ammonia>Primary Amine>Alcohol>Water
Frage 35
Frage
In these reactions between Acyl chlorides/Acid anhydrides and nucleophiles what type of reaction takes place?
Antworten
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Addition reaction
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Elimination reaction
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Electrophilic reaction
-
Neutralisation reaction
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Addition-elimination reaction
-
Electrophilic-elimination reaction
Frage 36
Frage
In addition-elimination reactions: If the nucleophile is ammonia the product is an/a...?
Antworten
-
N-substituted amide
-
Amide
-
Ester
-
Carboxylic Acid
Frage 37
Frage
In addition-elimination reactions: If the nucleophile is a primary amine the product is an/a...?
Antworten
-
N-substiuted amide
-
Amide
-
Ester
-
Carboxylic Acid
Frage 38
Frage
In addition-elimination reactions: If the nucleophile is the -OH group of an alcohol the product is an/a...?
Antworten
-
N-Substituted amide
-
Amide
-
Carboxylic acid
-
Ester
Frage 39
Frage
In addition-elimination reactions: If the nucleophile is water the product is an/a...?
Antworten
-
N-substituted amide
-
Amide
-
Carboxylic Acid
-
Ester
Frage 40
Frage
Ethanoic anhydride as an acylating agent is cheaper than ethanoyl chloride.
Antworten
- True
- False
Frage 41
Frage
Ethanoic anhydride as an acylating agent is more corrosive than ethanoyl chloride.
Antworten
- True
- False
Frage 42
Frage
Ethanoic anhydride as an acylating agent reacts less readily with water than ethanoyl chloride.
Antworten
- True
- False
Frage 43
Frage
Ethanoic anhydride as an acylating agent is safer than ethanoyl chloride due their by-products
Antworten
- True
- False
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