Driving Uphill

Coupled reactions and smelting

An interactive lesson with 5 steps, about 5 minutes: you predict, drag and solve, with instant feedback on every answer. It runs in your browser and needs JavaScript.

What you’ll learn

• Free energies add: a big downhill reaction can drive an uphill one.
• ATP hydrolysis powers uphill reactions in cells.
• Carbon reduces an oxide where its Ellingham line lies below the metal’s.

Steps

1. Pair it with a winner
2. ATP pays the bill
3. Getting metals out of rocks
4. Smelting zinc
5. Iron age