ELECTROLYSIS QUIZ

Sodium is extracted from sodium chloride by electrolysis. State the meaning of the term Electrolysis ….....

• The heating of a substance until it melts

• The combination of two elements to form a compound

• The decomposition of an ionic compound using electricity

• The evaporation of a liquid into a gas

The product of electrolysis can easily predict. Predict the product formed at the electrode during the electrolysis !

• Anode: Non metal

• Cathode: Non metal

• Anode : Metal

• Anode : hydrogen

Electroplating is a common industrial process. What is the main purpose of electroplating a metal object?

• To change the shape of the object

• To improve the electrical conductivity of the object

• To coat the object with a thin layer of metal for protection or decoration

• To melt the metal object into a different material

Which element is deposited at the cathode during the electrolysis of molten lead(II) chloride (PbCl₂)?

• Chlorine

• Lead

• Hydrogen

• Oxygen

During the electrolysis of concentrated hydrochloric acid (HCl), what is produced at the anode?

• Chlorine gas

• Hydrogen gas

• Sodium metal

• Oxygen gas

In the electrolysis of molten magnesium chloride (MgCl₂), what is formed at the cathode?

• Magnesium metal

• Chlorine gas

• Hydrogen gas

• Oxygen gas

Which of the following is a common application of electroplating?

• Creating plastic objects

• Fabricating semiconductors

• Applying a thin layer of gold to jewelry

• Melting metals for casting

Which of the following is NOT a component of an electrolytic cell?

• Anode

• Cathode

• Electrolyte

• Beaker glass

In an electrolytic cell, which component functions as the site where the oxidation reaction occurs?

• Cathode

• Anode

• Electrolyte

• Terminal

What is meant by conductivity in the context of electrochemistry?

• The ability of a solution to convert electrical energy into chemical energy

• The ability of a solution or substance to conduct electric current

• The ability of a solution to change pH

• The ability of an electrode to prevent corrosion