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Chemistry
A Level

Devise a simple synthetic route to an amide from a carboxylic acid. Give a mechanism for the final step and explain why the reagents are not added 1:1 in the final step

1st step: SOCl2 or PCl3 to form an acyl chloride, which is now significanlty more electrophilic based on leaving gorup abiliity, hence an amine can now attack the acyl chloride to fo...

EB
Answered by Elliot B. Chemistry tutor
2187 Views

Why are the theoretical and Born Haber lattice enthalpies different?

The theoretical Born Haber enthalpy assumes a perfect ionic model where the attraction between the ions is purely electrostatic and the ions are purely spherical. The Born Haber lattice enthalpy is the re...

AV
Answered by Amit V. Chemistry tutor
8067 Views

What is the structure of benzene?

Although benzene is often drawn with alternating single and double bonds (Kekule structure), this is not representative of what is actually going on. Refer back to the structure of a C=C double bond, whic...

JR
Answered by Jack R. Chemistry tutor
2264 Views

How can you tell if a reaction is endothermic or exothermic? Describe a way of determining if a reaction is exothermic or endothermic using simple laboratory equipment.

Exothermic and Endothermic reactions refer to if the change in Enthalpy of a reaction is negative or positive respectively.
If a reaction is exothermic that means that enthalpy change is nega...

TF
Answered by Tom F. Chemistry tutor
18130 Views

How can I predict the shape of complex ions from their formulae?

Complexes are formed through ligand binding (donation of a pair of electrons to the central metal atom), and the shape of the complexes is usually determined by steric factors - or how the ligands ...

TF
Answered by Tom F. Chemistry tutor
3035 Views

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