Search our library of Chemistry questions

Top answers

Chemistry

All levels

What are the differences between intermolecular and intramolecular forces?

Intermolecular forces are forces between separate molecules that hold the substance together. There are three main types; dipole-dipole interactions, hydrogen bonding and London dispersion forces, which a...

Answered by Jamie M. • Chemistry tutor

28645 Views

a) Give a balanced equation for the complete combustion of butane, b) Explain how this would change if there was insufficient oxygen present, and explain the problems this causes

C₄H₁₀ + 6.5O₂ -> 4CO₂ + 5H₂O
If there is not enough oxygen, incomplete combustion will occur, so CO (carbon monoxide) will be formed, carbon ...

Answered by Abigail P. • Chemistry tutor

7755 Views

How do I write the full equation of a cell from two half cells? (basic, with matching electron counts and no water/acid)

Lets use an example:Fe³⁺(aq) + e^- <==> Fe²⁺(aq) E⁰ = +0.771 VLi⁺(aq)+ e^- <==> Li(s) E⁰ = -3...

Answered by Fred P. • Chemistry tutor

1978 Views

What is Fractional Distillation and how does it work?

Fractional Distillation is a method used in industry to separate different sized hydrocarbons (long chains that consist of hydrogen and carbon). This is useful as it mean...

Answered by Fred P. • Chemistry tutor

3351 Views

Why, in the bromination of phenols, do you not need an acid catalyst like you do in the bromination of benzene?

Benzene's delocalised π electrons means that it is not very nucleophilic and so cannot polarise a neutral molecule and produce the required electrophile. As a result it require a catalyst to form the elec...

Answered by Sian A. • Chemistry tutor

6833 Views