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