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Describe how and explain why vegetable oils are hardened for use in foods.

Vegetable oils are reacted with hydrogen at 60 degrees Celcius in the presence of a nickel catalyst. This process is called hydrogenation. Vegetable oils contain carbon to carbon double bonds meaning they ar...
RJ
Answered by Rachel J. • Chemistry tutor
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What is a stereoisomer?

Stereoisomers are molecules with the same structural formula (same number of each type of atom bonded together in the same order e.g. carbon bonded to carbon bonded to oxygen) but with the atoms arranged dif...
LG
Answered by Lizzi G. • Chemistry tutor
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Explain how the electron pair repulsion theory can be used to deduce the shape of, and the bond angle in, PF3 .

Number of electrons from P= 5 e , Number of electrons from 3F = 3 e , Total number of electrons around P = 8 e Therefore there is a total number of 4 electron pairs surrounding P. three of which are bond pai...
YA
Answered by Yusuf A. • Chemistry tutor
3812 Views

State the meaning of the term first ionisation energy

Energy (or enthalpy) needed to remove one electron from one atom.
AE
Answered by Azobir E. • Chemistry tutor
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What is a transition metal complex?

A transition metal complex is a central metal ion (for example platinum) surrounded by ligands. Ligands are ions or small molecules that donate a pair of electrons to the central metal ion and surround it in...
JB
Answered by Jessica B. • Chemistry tutor
3435 Views