Electrolysis

Front

What is the name of the positive electrode?

Back

anode

Front

What is the name of the negative electrode?

Back

cathode

Front

Where do negatively charged ions migrate?

Back

anode

Front

The electrodes in electrolysis of aluminium are made of

Back

Graphite

Front

What do you add to aluminium ore to reduce its melting temperature?

Back

Cryolite

Front

When NaCl solution is electrolysed, what forms at the anode?

Back

Chlorine

Front

Equation for Cl ions at the anode: Cl^- --> Cl + e-   , 2Cl^- --> Cl₂ + 2e-   , Cl₂ + 2e-   2Cl^- , Cl₂ + 2e-  _-->  2Cl^- 

Back

2Cl^- --> Cl₂ + 2e-   

Front

Why does the bulb only light up when the lead(II) bromide is melted?

Back

The ions in lead(II) bromide are mobile charge carriers in the molten state.

Front

Anions get discharged by ________ electrons at the ___________

Back

losing, anode

Front

Choose the half-equation that shows the discharge of aluminium ion.

Back

Al³⁺ + 3e^- --> Al