Redox & Oxidation Numbers

\Delta(\text{ox. no.}) = 0 \rightarrow 2

Zn oxidation number0

Cu²⁺ oxidation number+2

Electrons transferred0.00

Reaction progress0

Select Zn + Cu²⁺ → Zn²⁺ + Cu and run the reaction to completion (progress = 1)
On the Zn reaction, find the point where exactly 1 electron has been transferred
Switch to Fe²⁺ + Ce⁴⁺ → Fe³⁺ + Ce³⁺ and get the oxidising agent's number down to +3
Select Mg + 2H⁺ → Mg²⁺ + H₂ and run it to completion — confirm 2 electrons are transferred
Set the Zn reaction to exactly halfway (progress = 0.5) and confirm Zn's oxidation number is +1