Reaction-Web

ΔH, ΔS, ΔG and log K for a reaction as written

The reaction

Enter the reactants on the left and the products on the right. The reaction is evaluated exactly as you write it, so it must be balanced.

Reactants

Amount 1	Species 1	Phase 1
Amount 2	Species 2	Phase 2

Products

Amount 3	Species 3	Phase 3
Amount 4	Species 4	Phase 4

Chemical symbols are case sensitive: CO is carbon monoxide, Co is cobalt. A phase you pin is used even where it is not the stable one — those rows are marked.

Temperature range

From (K)

To (K)

Step (K)

Between 273 and 6000 K, maximum 200 calculations.

Units

Temperature

Energy

Pressure

Amounts in

Worked examples

Each one fills in the form above.

Properties of one species	The simplest query: a species on its own, with nothing on the right.
Oxidation of copper	A simple standard reaction, letting the engine pick each phase.
The same, with phases pinned	Solid, gas and solid named explicitly — compare the two.
Melting of aluminium	One species on both sides, solid to liquid. Add a ΔG = 0 row on the results page to get its melting point.
Combustion of methane, adiabatic	Add a ΔH = 0 row on the results page for the adiabatic flame temperature.
An aqueous reaction	Ions carry their charge in brackets; the balance check leaves those alone.