Electrolysis and Electrochemical Cells Quiz

During a science experiment, Benjamin observed that when he passed electric current through a solution of salt water, the solution began to break down into its components. What is this process called?

• The process of combining elements

• The decomposition of a compound using electric current

• The reaction of metals with acids

• The formation of ionic compounds

Which component of an electrolytic cell is connected to the positive terminal of the battery?

• Electrolyte

• Cathode

• Anode

• Electrical source

What type of ions move to the cathode during electrolysis?

• Anions

• Cations

• Neutral atoms

• Molecules

What happens to solid lead(II) bromide during electrolysis?

• It does not conduct electricity

• It decomposes into lead and bromine

• It conducts electricity

• It melts and conducts electricity

Which gas is produced at the anode during the electrolysis of aqueous sodium chloride?

• Bromine

• Chlorine

• Oxygen

• Hydrogen

What is the hypothesis regarding ionic compounds in solid state?

• They can undergo electrolysis

• They cannot undergo electrolysis

• They can conduct electricity

• They decompose easily

What is the effect of increasing the concentration of an electrolyte on ion discharge?

• It changes the type of ions discharged

• It increases the likelihood of discharge

• It has no effect

• It decreases the discharge rate

What is the role of the light bulb in the electrolysis experiment?

• To provide light for observation

• To indicate the flow of electric current

• To heat the electrolyte

• To measure temperature

Which ions are selected to be discharged at the anode in a concentrated sodium chloride solution?

• Hydroxide ions

• Chloride ions

• Sodium ions

• Hydrogen ions

What is the purpose of using carbon electrodes in electrolysis?

• To increase conductivity

• To allow for ion discharge

• To prevent gas formation

• To provide a stable reaction environment