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Chemistry
A Level

Why does phenol react more readily with bromine than benzene?

The oxygen on the OH (of the phenol) has a lone pair which it donates into the delocalised pi system of the ringThis activates the ring and there is now a high electron density.This is now strong enough t...

LK
Answered by Leah K. Chemistry tutor
2878 Views

Explain: 1. Why butanoic acid has a higher boiling point than butan1-ol? 2. Why carboxylic acids of short chain length are more soluble in water than those with longer carbon chain length?

1.Butanoic acid has stronger intermolecular forces (hydrogen bonding) because it has two highly electronegative oxygen atoms in its structure, whereas butan-1-ol has only one. Therefore t...

SL
Answered by Samuel L. Chemistry tutor
20546 Views

State the element in period 3 that has the highest melting point and explain your answer.

Silicon has a Chrystal structure with many covalent bonds between atoms. Covalent bonds are strong and need a large amount of energy to be broken in order to melt Silicon.

LB
Answered by Lily B. Chemistry tutor
3687 Views

What is hydrogen bonding and why does water have a higher boiling point than methanol?

Hydrogen bonding is an intermolecular interaction between a partially positively charged hydrogen atom on one molecule and a partially negatively charged atom on another molecule. The difference in charge...

MQ
Answered by Max Q. Chemistry tutor
22183 Views

Describe how to test for and identify halide ions in a solution.

First acidify the solution using dilute nitric acid, then add silver nitrate. The silver ions should react with the halide ions to form a precipitate, with colour depending on which halide ion is...

CC
Answered by Connor C. Chemistry tutor
4078 Views

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