EXPERIMENT 4. Expt #4 - Properties of Aldehydes Ketones
https://people.chem.umass.edu/mcdaniel/chem269/experiments/aak/procedure.pdf
26 jan. 2010 Properties of Alcohols Aldehydes and Ketones. Objectives. In this experiment
Addition of water to an aldehyde or ketone gives a product called a hydrate or a gem-diol (two -OH groups on the same carbon). • The reaction is both acid-
The physical properties of aldehydes and ketones are described as follows. (ii) Fehling's test: Fehling reagent comprises of two solutions.
ketones. Tollen's test. C-23. Tests for the presence of aldehydes Any relevant physical properties (i.e. melting points or boiling points of possible ...
http://laney.edu/pinar-alscher/wp-content/uploads/sites/219/2014/09/7-Aldehydes_Ketones_C._Acids.pdf
compounds and alcohols is therefore
Physical Properties of Aldehydes and Ketones Name Molecular weight Boiling point Solubility in water butane 58 g/mol 0°C Insoluble propanal 58 g/mol 49°C Soluble acetone 58 g/mol 56°C Soluble 1-propanol 60 g/mol 97°C Soluble Boiling Points: Alcohols Aldehydes/Ketones Ethers Alkanes Water Solubility: Alcohols Aldehydes/Ketones Ethers Alkanes 20
Sep 7 2014 · Physical Properties Aldehydes and ketones are polar because they contain a carbonyl group (oxygen is very electronegative compared to carbon) Aldehydes and ketones can form hydrogen bonds with water so small aldehydes and ketones are water-soluble However they cannot form hydrogen bonds to each other so their boiling points are not very high
Aldehydes are oxidized by chromic acid ketones are not When an aldehyde is oxidized by orange-brown chromic acid the chromic acid is reduced to Cr+3 which is green Consequently chromic acid can distinguish between aldehydes and ketones It is also true that other functional groups primary and secondary alcohols for example
EXPERIMENT 4 Expt #4 - Properties of Aldehydes Ketones Carboxylic Acids and Amines – Acid/Base and Redox Reactions Materials Needed cyclohexanone acetone benzaldehyde benzoic acid acetic acid cyclohexylamine 18 small test tubes 4 mL 5 AgNO3(aq) 12 mL 5 NaOH(aq) 5 NH3(aq) (to prepare Tollens’ reagent)
Aldehydes and ketones both contain the C=O or carbonyl group Aldehydes have at least one hydrogen bonded directly to the C=O whereas ketones always have two alkyl groups attached to the C=O OO C RHRR'an aldehydea ketone Because they contain the polar carbonyl group aldehydes and ketones are polar compounds
Aldehydes and ketones behave differently toward oxidizing agents Because aldehydes have a hydrogen atom directly bonded to the carbonyl carbon it makes them more reactive to oxidation than ketones R O H [O] strong oxidizing agent R O OH aldehyde carboxylic acid Ketones which have no hydrogen attached to the carbonyl carbon atom may be