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Why do boiling points change between primary alcohols and seconrady alcohols?
Wiki User
∙ 16y ago
as branching increases, the molecules are held relatively far away, and so they experience only weak intermolecular (or van der Waals) force of attraction. so as branching increases, boiling point decreases.
Wiki User
∙ 16y ago
Wiki User
∙ 14y agoIntermolecular forces.
Alcohols have an OH group (alcohol group), Alkanes are organic molecules with only single bonded carbons and no OH groups. The oxygen and hydrogen form a polar bond, creating a slightly positive charge on the hydrogen facing outward. This in turn creates hydrogen bonding between the molecules, they 'stick' together and it takes more energy to separate them. Alkanes have weak intermolecular forces since all their bonds are single covalent bonds, London forces are still at work. With less intermolecular forces it takes relatively little energy to get these molecules to break away from each other (going from a close liquid to a spaced-out gas).
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What is the importance of Lucas test?
It is used to distinguish between primary,secondary & tertiary alcohols
What kind of alcohols can be used to prepare aldehydes?
All primary (10) alcohols may be oxidized to aldehydes.
Use of borane in THF in organic synthesis?
Borane takes aldehydes to primary alcohols and ketones to secondary alcohols it also reduces esters but only slowly
What is the colour of K2Cr2O7 when oxidized or reduced?
Orange ---> Green Primary and secondary alcohols, no reaction with tertiary
What is the difference between Dehydration of primary secondary and tertiary alcohol?
In a primary (1°) alcohol, only attached to one alkyl group; In a secondary (2°) alcohol, attached two alkyl groups & tertiary (3°) alcohol, attached three alkyl groups Actually, that person has you more confused. This is an easy way to remember what is 1 degree, 2 degree or 3 degree of Alcohols. 1 degree: R-- CH2 -- OH 2 degree: R2 -- CH -- OH 3 degree: R3 -- C -- OH R = CH3
What is the importance of Lucas test?
It is used to distinguish between primary,secondary & tertiary alcohols
What kind of alcohols can be used to prepare aldehydes?
All primary (10) alcohols may be oxidized to aldehydes.
What are primary Alcoholes?
alcohols
How many primary alcohols have the molecular formula C5H11OH?
FOUR
Use of borane in THF in organic synthesis?
Borane takes aldehydes to primary alcohols and ketones to secondary alcohols it also reduces esters but only slowly
Which undergoes reduction more rapidly ester or aldehyde?
Aldehydes easily reduce to primary alcohols.
What is the colour of K2Cr2O7 when oxidized or reduced?
Orange ---> Green Primary and secondary alcohols, no reaction with tertiary
Why tertiary alcohol reacts with metallic sodium less rapidly than primary alcohol?
Tertiary alcohols have a bulky alkyl group bonded to the carbon atom that carries the hydroxyl group. This bulky group hinders the approach of the sodium atom, making the reaction less rapid. In contrast, primary alcohols have a smaller alkyl group and allow for easier access and reaction with metallic sodium.
What is the boiling point of gasoline?
Boiling point of gasolineThe boiling point of gasoline varies. At atmospheric pressure, it's between 100 and 400 degrees F. A primary cause of this variance is the various additives in the gasoline from different refiners designed to meet different octane requirements.
What type of alcohols is fischer esterification limited to?
Primary and secondary alcohols are commonly used in the process and work efficiently with an acid catalyst but tertiary alcohols can also be used in some cases under the right conditions. One the reasons that it is more difficult to use tertiary alcohols is because of the steric hinderance which exists in the molecule so there is too much molecular interaction for a stable compound to form.
What kinds of alcohols can be used to prepare ketones?
Secondary and tertiary alcohols can form ketones. A primary alcohol will form an aldehyde.
Why teritay alcohol cannot be made by hydrogenation of aldehydes or ketones?
Ter. alcohols are those in which alpha carbon (carbon bearing halogen atom) is attached to three other carbon atoms, in aldehyde there is only one and in ketones there are two carbons attached to alpha carbon so by hydrogenation aldehydes may be converted into primary alcohols and ketones into secondary alcohols so preparation of ter. alcohols is not possible. however ketones with Grignard's reagents may produce tertiary alcohols.
