Top answers


What is Gibbs free energy? How is it useful?

The Gibbs free energy of a process is a measure of how readily that process will proceed on its own - a negative value means that the reaction is spontaneous, a positive value means that it is not, and a val...
MM
Answered by Murdo M. Chemistry tutor
10818 Views

What is the difference between SN1 and SN2 reactions, and how do you determine via which mechanism the reaction will proceed?

This is the sort of question you are likely to stumble across in an IB HL Paper 2 examination. It would probably carry a few more marks and thus require a longer answer, but that is reason to panic!First of ...
JG
Answered by James G. Chemistry tutor
14010 Views

What is Mass Spectrometry?

Mass spectrometry is a technique we use to analyse and determine the structure of compound . Generally, it works by injecting your compound into an ionisation chamber , where it breaks up into smaller fragme...
SB
Answered by Sinead B. Chemistry tutor
4194 Views

What is a mole?

A mole is simply a number, an amount of something. Like when people refer to a dozen of eggs they mean 12 eggs, when someone says a mole of atoms they mean 6.022 x 10 23 atoms. A mole is simply defined as ‘t...
CH
15379 Views

How do each of ionic, covalent and metallic bonding compare?

To begin, it is important to note that each of these three types of bonding is very strong. Both ionic and metallic bonding rely on electrostatic forces of attraction between oppositely charged particles. In...
AA
Answered by Alia A. Chemistry tutor
14825 Views