Electrolysis：練習題

What is the product formed at the cathode during the electrolysis of molten lead(II) bromide, \(\text{PbBr}_2\)?

Which statement correctly describes why ionic compounds can undergo electrolysis when molten but not when solid?

A student electrolyses concentrated aqueous sodium chloride using inert carbon electrodes. Which result is observed during this process?

What are the products formed during the electrolysis of concentrated aqueous sodium chloride using inert electrodes?

When concentrated aqueous sodium chloride is electrolyzed using inert electrodes, which observation correctly matches the electrode and the product formed?

In a simple electrolytic cell, identify which electrode is the anode and which is the cathode in terms of their electrical charge.

Describe the observations made at the anode and cathode during the electrolysis of molten lead(II) bromide using carbon electrodes.

Predict the products formed at the electrodes during the electrolysis of concentrated aqueous sodium chloride using inert carbon electrodes.

Electrolysis involves the use of electricity to break down ionic compounds.
(a) Define the term electrolysis.
(b) During the electrolysis of molten lead(II) bromide, \(PbBr_2\), identify the products formed at the anode and the cathode.
(c) Describe the observations made at each electrode during this process.

Concentrated aqueous sodium chloride, known as brine, is electrolyzed using inert carbon electrodes.
(a) List all the ions present in the electrolyte.
(b) Identify the gas produced at the anode and explain why it is formed instead of oxygen.
(c) Identify the product at the cathode.