431951
Descrição
Quiz por stevbarretto, atualizado more than 1 year ago
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Criado por stevbarretto
quase 11 anos atrás
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Questão 1
Questão
Aldehydes and Ketones contain which functional group?
Responda
-
-OH
-
Benzene ring
-
C=O
Questão 2
Questão
Of these compounds with comparable relative molecular mass, which has the higher boiling point?
Responda
-
Alcohols
-
Alkanes
-
Carbonyl compounds
Questão 3
Questão
Tick which answers are true
Responda
-
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
Questão 4
Questão
Which reactions commonly occur with carbonyl compounds?
Responda
-
Electrophilic addition
-
Nucleophilic substitution
-
Nucleophilic addition
-
Redox
-
Neutralisation
Questão 5
Questão
Reactions of Aldehydes and Ketones with Hydrogen Cyanide (:CN-) produce what?
Responda
-
Carboxylic acids
-
Amines
-
Amides
-
N-Substituted Amides
-
Hydroxynitriles
-
Esters
-
Alcohols
Questão 6
Questão
A nucleophilic reaction produces a racemic mixture when a nucleophile attacks which of these?
Responda
-
A symmetrical Ketone
-
An Aldehyde
-
An unsymmetrical Ketone
Questão 7
Questão
What does acidified potassium dichromate do to aldehydes?
Responda
-
Oxidise to ester
-
Reduce to ester
-
Oxidise to alcohol
-
Reduce to alcohol
-
Oxidise to carboxylic acid
-
Reduce to carboxylic acid
-
Nothing
Questão 8
Questão
What does acidified potassium dichromate do to ketones?
Responda
-
Oxidise to ester
-
Reduce to ester
-
Oxidise to carboxylic acid
-
Reduce to carboxylic acid
-
Oxidise to alcohol
-
Reduce to alcohol
-
Nothing
Questão 9
Questão
Colour of Fehlings solution?
Responda
-
Green
-
Orange
-
Red
-
Brown
-
Pink
-
Blue
Questão 10
Questão
When an aldehyde is warmed with Fehlings solution a precipitate is formed. What colour?
Responda
-
Red
-
Green
-
Blue
-
Orange
-
Yellow
-
Pink
-
Black
Questão 11
Questão
When an aldehyde is warmed with Tollens reagent __________ is formed
Responda
-
Metallic silver
-
Red precipitate
-
Blue precipitate
Questão 12
Questão
Reducing agents (e.g. NaBH4) can reduce aldehydes and ketones to ____________
Responda
-
Carboxylic acids
-
Esters
-
Alcohols
-
Alkanes
-
Alkenes
Questão 13
Questão
Reducing agent sodium tetrahydridoborate(III) generates which nucleophile?
Responda
-
-F
-
-OH
-
-H
-
-CH3
-
-NH2
Questão 14
Questão
Benzene ring with carboxylic acid group attached is called..?
Responda
-
Phenylcarboxylic acid
-
Carboxylbenzoic acid
-
Benzenecarboxylic acid
Questão 15
Questão
Carboxylic acids are completely soluble in water. (Up to C4 only)
Responda
- True
- False
Questão 16
Questão
Carboxylic acids have lower melting points than alkanes of similar relative molecular mass
Responda
- True
- False
Questão 17
Responda
-
Colour
-
Boiling point
-
Viscocity
-
Electronegativity
-
Amounts
-
Melting Points
Questão 18
Questão
Glacial ethanoic acid is...?
Responda
-
Cooler
-
Pure ethanoic acid
-
Ethanoic acid from glaciers
Questão 19
Questão
How to name esters?
Responda
-
Group attached to oxygen comes first followed by R-COO
-
R-COO comes first and the group attached to oxygen comes last
Questão 20
Questão
Which has pleasant fruity smells?
Responda
-
Long chain esters
-
Short chain esters
Questão 21
Questão
The H in R-COOH (carbox. acid) can be lost as H+ leaving [R-COO]- what is this ion called
Responda
-
Carboxyl ion
-
Carboxylate ion
-
Carboxilic ion
-
Carboxylic acid ion
Questão 22
Questão
How to distinguish between carboxylic acids and other organic compounds?
Responda
-
React with water
-
React with sodium hydrogencarbonate
-
React with potassium dichromate
Questão 23
Questão
Ionic salts formed from carboxylic acids donating protons are called? (e.g. Ethanoic Acid + Sodium Hydroxide -> *Sodium Ethanoate* + Water)
Responda
-
Carboxyls
-
Carboxylates
-
Carboxylic salts
-
Carboxyl salt
Questão 24
Questão
Esters are formed in which reaction?
Responda
-
Alcohol + Ketone
-
Alcohol + Aldehyde
-
Aldehyde + Ketone
-
Alcohol + Carboxylic Acid
-
Carboxylic Acid + Aldehyde
-
Carboxylic Acid + Ketone
-
Carboxylic Acid + Alkene
Questão 25
Questão
This reaction (sped up by a strong acid catalyst) forms............?
Responda
-
Non equilibrium mixture
-
An equilibrium mixture
Questão 26
Questão
_____(1)______ is attacked by water acting as a _______(2)______ in the hydrolysis of esters
Responda
-
R group
-
R' group
-
Carbonyl Oxygen
-
Carbonyl Carbon
-
Strong nucleophile
-
Weak nucleophile
-
Weak electrophile
-
Strong base
-
Weak base
-
Weak acid
Questão 27
Questão
Equilibrium mixture of the hydrolysis of esters contains which of these..?
Responda
-
Alcohol
-
Ester
-
Base
-
Acid
-
Water
-
CO2
Questão 28
Questão
Fats and oils can be hydrolysed by boiling with NaOH to produce?
Responda
-
Water
-
CO2
-
Glycerol
-
Sodium Salts
Questão 29
Questão
Salts formed from hydrolysis of fats and oils using NaOH are used in?
Responda
-
Soaps
-
Paint
-
Sun cream
Questão 30
Responda
-
Aryl
-
Methyl
-
Acyl
-
Carbonyl
Questão 31
Questão
Esters, Acid Chlorides and Acid Anhydrides are examples of?
Responda
-
Acyl derivatives
-
Acid derivatives
Questão 32
Questão
Acyl chlorides and acid anhydrides are bad acylating agents
Responda
- True
- False
Questão 33
Questão
Acid chlorides are more reactive than acid anhydrides
Responda
- True
- False
Questão 34
Questão
Acyl Chlorides and Acid Anhydrides react with the following nucleophiles but in which order of reactivity?
Responda
-
Primary Amine>Ammonia>Alcohol>Water
-
Water>Primary Amine>Alcohol>Ammonia
-
Ammonia>Primary Amine>Alcohol>Water
Questão 35
Questão
In these reactions between Acyl chlorides/Acid anhydrides and nucleophiles what type of reaction takes place?
Responda
-
Addition reaction
-
Elimination reaction
-
Electrophilic reaction
-
Neutralisation reaction
-
Addition-elimination reaction
-
Electrophilic-elimination reaction
Questão 36
Questão
In addition-elimination reactions: If the nucleophile is ammonia the product is an/a...?
Responda
-
N-substituted amide
-
Amide
-
Ester
-
Carboxylic Acid
Questão 37
Questão
In addition-elimination reactions: If the nucleophile is a primary amine the product is an/a...?
Responda
-
N-substiuted amide
-
Amide
-
Ester
-
Carboxylic Acid
Questão 38
Questão
In addition-elimination reactions: If the nucleophile is the -OH group of an alcohol the product is an/a...?
Responda
-
N-Substituted amide
-
Amide
-
Carboxylic acid
-
Ester
Questão 39
Questão
In addition-elimination reactions: If the nucleophile is water the product is an/a...?
Responda
-
N-substituted amide
-
Amide
-
Carboxylic Acid
-
Ester
Questão 40
Questão
Ethanoic anhydride as an acylating agent is cheaper than ethanoyl chloride.
Responda
- True
- False
Questão 41
Questão
Ethanoic anhydride as an acylating agent is more corrosive than ethanoyl chloride.
Responda
- True
- False
Questão 42
Questão
Ethanoic anhydride as an acylating agent reacts less readily with water than ethanoyl chloride.
Responda
- True
- False
Questão 43
Questão
Ethanoic anhydride as an acylating agent is safer than ethanoyl chloride due their by-products
Responda
- True
- False
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