Top answers

Chemistry
All levels

How do you test for alkenes and alkanes?

Mix with bromine water (orange), if a double bond is present (alkenes) then the bromine water will be decolourised.

EP
5460 Views

What is distillation?

Distillation is a process used to seperate a liquid from a mixture of different liquids. It works on the basis that liquids have different boiling points. A common example is ethanol and water. The liquid...

EC
Answered by Emma C. Chemistry tutor
8069 Views

Describe how crude oil is separated into fractions

Crude oil is separated by fractional distillation. Crude oil is heated to vaporize the different hydrocarbons in a tank which is cool at the top and hot at the bottom. The vapours then rise and the differ...

PI
Answered by Paul I. Chemistry tutor
76548 Views

Ethane is an organic compound. Please (a) write down the molecular formula of ethanoic acid and (b) verify the type of organic compound ethanoic acid belongs.

a) C2H6 b) Carboxylic Acid

SI
Answered by Sum I F. Chemistry tutor
2624 Views

How is crude oil separated into fractions?

The crude oil is placed into large tanks, which are heated at the bottom, creating a gradient whereby the column is cooler at the top. The heat causes the oil to evaporate, and each fraction will reach a ...

SC
Answered by Sarah C. Chemistry tutor
3500 Views

We're here to help

contact us iconContact ustelephone icon+44 (0) 203 773 6020
Facebook logoInstagram logoLinkedIn logo

MyTutor is part of the IXL family of brands:

© 2026 by IXL Learning