Chemistry · Chapter 20

Amines, Amides and Polymers

Weigh up how strong a base an amine really is, then link monomers into a chain two different ways and keep track of every atom that leaves.

The model numbers update as you change anything

The amine or polymer on screen

The nitrogen keeps a lone pair of electrons. That pair can take a proton from water, which leaves hydroxide behind.

Readout

methylamine primary amine
Formula
CH5N
Molar mass (g/mol)
31.06
pH
11.81
pKb
3.36
[OH⁻] (M)
6.42e-3
Share protonated
6.42%

Pick a view

Which nitrogen compound
What is happening
A weak base at work
An amine takes a proton from water. Only a small share of the molecules manage it at any moment, so the pH climbs but never reaches that of a strong base.

Atom bookkeeping

Switch to a polymer view to follow the mass. Addition chains keep every atom. Condensation chains drop one small molecule at every link, and the count is tracked here.