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Why does the bromine become polarised in HBr during electrophilic addition

A C to C double bond has a high electron density. As the bromine gets close to the C=C bond the high electron density repels the electrons in the H-Br bond further towards the H making the H slightly negativ...
RC
Answered by Richard C. • Chemistry tutor
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"Sulfur Dioxide can be represented as a sulfur atom with double bonds to each of two oxygen atoms, explain the shape of this molecule and predict the bond angle".

This molecule is v-shaped. There are three areas of electron density surrounding the central sulfur atom, these three areas of electron density repel as far apart as possible, explained by the VSEPR theory, ...
FG
Answered by Firat G. • Chemistry tutor
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Proton NMR Made Easier

Proton or 1 H NMR can look complicated but with practice; there are techniques that can make the peak assignment a little easier.1. Make sure you count the proton environments correctly, if the molecule disp...
ML
Answered by Martin L. • Chemistry tutor
4674 Views

What is clonal selection?

Clonal selection is a part of human immune response where specific B or T-helper lymphocytes are chosen to undergo clonal expansion B-lymphocytes and T-helper lymphocytes have unique and specific antigen rec...
OM
Answered by Oliver M. • Chemistry tutor
51323 Views

What is the rate-determining step?

The rate-determining step is simply the slowest step in a reaction mechanism of a multi-step reaction. Most reactions do not happen in one simple step. You may be familiar with overall reactions however thes...
CK
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