Top answers

Chemistry
A Level

Types of chemical bonds

Ionic bond- this is an electrostatic force of attraction between two oppositely charged ions, i.e. a positively charged ion and a negatively charged ion. 

Covalen...

Lizzie B. avatar
Answered by Lizzie B. • Chemistry tutor
13988 Views

What are Van Der Waals dispersion forces?

Van der Waals forces are a form of intermolecular (between molecules) force. 

A covalent bond is created by a shared pair of electons. (For example two chlorine atoms wil...

Answered by Zuhayr A. • Chemistry tutor
5797 Views

How is benzene nitrated?

The nitration of benzene is an example of an electrophilic substitution reaction - where one of the hydrogens (or other group attached to the benzene ring) is removed and replaced by another group. The...

Answered by Lily C. • Chemistry tutor
5666 Views

How do I calculate the Gibbs free energy change for a reaction when given the entropy change, enthalpy change and the reaction conditions>

deltaG= Gibbs free energy 

deltaG=deltaH - TdeltaS 

If deltaH= 150 kJ/mol and deltaS=2.1 J/mol we must first convert the deltaS into kJ/mol, this is done by multiplying by 1...

Answered by Archit M. • Chemistry tutor
9582 Views

How do I predict the shape and bond angle of an molecule?

Electron pairs arrange themselves so they are as far apart as possible (electron pair repulsion theory). In a covalent compound, the number of electron pairs around the central atom determines the shap...

Answered by Tolu T. • Chemistry tutor
14565 Views

Cookie Preferences