Top answers

Chemistry
A Level

How would you test for the presence of a phenol?

By adding Iron (III) Chloride to the solution and if it turns purple, it means a phenol is present. 

Answered by Rebecca N. Chemistry tutor
8821 Views

What is the difference between pH and pKa?

pH is the measure of the concentration of proton in an aqueous environment, which is denoted as: pH = -log[H3O+]. pKa however, is prefered when comparing how strong an acid is becaus...

Answered by Anthony M. Chemistry tutor
7482 Views

Why is phenol more reactive than benzene?

Benzene is made from an aromatic ring consisting of 6 carbon atoms and 6 hydrogen atoms, with delocalised electrons in the centre. Phenol has an additional hydroxy (-OH) group on the ring, and the oxygen ...

Answered by Erin L. Chemistry tutor
4320 Views

Which test would you use to identify the difference between an aldehyde and a ketone? Explain your observations.

Tollens Reagent "silver mirror test". When added to the aldehyde, a silver mirror appears. When added to the ketone, nothing happens.This is because the Tollens Reagent oxidises the aldehyde, wh...

Answered by Rachel J. Chemistry tutor
9235 Views

Why does a sample containing compounds with chiral carbons have no effect on plane polarised light?

For a sample containing chiral carbons to have no effect on plane polarised light there must be an equal amount of each enantiomer in the sample. Enantiomers rotate plane polarised light by the sa...

Answered by Aneliese H. Chemistry tutor
3341 Views

We're here to help

contact us iconContact usWhatsapp logoMessage us on Whatsapptelephone icon+44 (0) 203 773 6020
Facebook logoInstagram logoLinkedIn logo

© MyTutorWeb Ltd 2013–2025

Terms & Conditions|Privacy Policy
Cookie Preferences