Top answers

What is the difference between a polar molecule and a non-polar molecule? Can non-polar molecules be formed by polar atoms?

Polar molecules are those that have permanent dipoles. A permanent dipole occurs due to a difference in the electronegativity of the atoms involved in the bond. You might not be familiar with the term ´elect...
AG
Answered by Adrian G. • Chemistry tutor
8663 Views

A white substance is placed on the table in front of you, explain what methods/techniques you could use to determine what compound the substance is

Melting point, NMR, Mass spectrometry, IR spectroscopy
GI
Answered by Gavin I. • Chemistry tutor
2934 Views

Draw the chemical structures of butane, butene and butyne.

I would then go through with the student and explain that an alkane is a hydrocarbon made up of single carbon-carbon bonds only. This is why butane ends in -ane, it begins with but- due to the number of carb...
GI
Answered by Gavin I. • Chemistry tutor
10716 Views

In organic chemistry, how can functional groups be easily identified and how can I memorise organic mechanisms?

For both As and A-level, knowing functional groups for organic chemistry is essential. The easiest way to identify functional groups is to understand which bonds are characteristic for the functional group. ...
NS
Answered by Niamh S. • Chemistry tutor
6001 Views

A solution of ethanoic acid is made by dissolving 3g of pure liquid propanoic acid in 500cm^3 water. Given the pH of the solution is 2.98, calculate Ka.

Before using numbers from the question: 1)What is pH? pH = -log[H + ] Square brackets mean concentration of H+ so we need to convert given pH to [H + ] in the weak acid coefficient 2) To find the concentrati...
SH
Answered by Sofia H. • Chemistry tutor
3735 Views