Top answers

Benzene reacts with Chlorine gas in the presence of iron trichloride to yield hexachlorobenzene. However, when it reacts with fluorine gas, it forms a quinoid product (I would actually draw it for them - no need to know the name). Why the difference?

Fluorine is much more reactive than chlorine, even destroying the aromaticity. This is at the expense of the very strong C-F bonds (good orbital size and energy overlap) that are formed. C-Cl bonds are weake...
RB
Answered by Radu B. • Chemistry tutor
3246 Views

Explain how a mutation in the genetic code leads to a dysfunctional enzyme.

Mutations are a random change in the nucleotide sequence in a genome. Genes code for proteins, such as enzymes, and are found in the genome. When a change in the nucleotide sequence within a gene happens, th...
BT
Answered by Benjamin T. • Biology tutor
5022 Views

Explain the VSEPR Theory.

The acronym VSEPR is short for 'Valence Shell Electron Pair Repulsion'. Consequently, the VSEPR theory is about the repulsion effect of the most chemically important valence electrons and the influence of th...
TD
3961 Views

So why do you want to study medicine?

Medicine is a field that would allow me to combine my long standing and deep rooted interest in the sciences with a real passion for helping people. Through the work experience placements I have under taken,...
LW
1732 Views

How do you prove the chain rule?

Given the problem f(x)=(y+x)^5 we use the chain rule as a tool to find the derivative. However, it is difficult to use effectively in further problems without understanding the mechanics of the function. F(x...
EC
Answered by Ella C. • Maths tutor
4564 Views