Electrolysis

Front

Which statement correctly describes the 2 electrodes?

Back

The anode is positive and the cathode is negative

Front

___________ electrode is an inert electrode. Options: Copper, Iron, Carbon, Zinc

Back

Carbon

Front

Why do ionic compounds not conduct electricity when solid?

Back

Their ions are not free to move.

Front

Positive ions (cations) will move towards the cathode (-) where they will discharge by...

Back

Gaining electrons

Front

Which equation shows what happen to chloride ions at the anode?

Back

2Cl^- --> Cl₂ + 2e-

Front

Choose the half-equation that shows the discharge of aluminium ion: Al³⁺ - 3e^- --> Al, Al²⁺ + 3e^- --> Al, Al³⁺ + 3e^- --> Al, Al³⁺ --> Al + 3e^-

Back

Al³⁺ + 3e^- --> Al

Front

In an aqueous solution of copper chloride, which ions are attracted to the negative electrode?

Back

Cu²⁺ and H⁺

Front

In electrolysis of concentrated HCl, what is the product formed at anode?

Back

Chlorine

Front

Where does oxidation take place during electrolysis?

Back

At anode

Front

What change is observed at cathode during electrolysis of aqueous copper(II) chloride using carbon electrode? Options: Silvery deposit, pink solid deposit, bubbles of green gas, colourless gas.

Back

pink solid deposit