Electrochemistry and Electrolysis Quiz

What is the first step in analyzing an electrolysis question?

• Determine the products

• Label the anode and cathode

• Check the temperature

• Identify the electrolyte

What is the chemical formula for rubidium chloride in aqueous solution?

• Rb2Cl (aq)

• RbCl2 (aq)

• RbCl (aq)

• RbCl (s)

Which acronym helps remember the process at the cathode?

• PANIC

• RED CAT

• OXID

• ELECTRO

Why is platinum used as an electrode in this experiment?

• It is cheap

• It is reactive

• It is inert

• It is colorful

Which ion is preferentially reduced at the cathode?

• Cl-

• H+

• Rb+

• OH-

In a concentrated halide solution, which ion is preferentially oxidized at the anode?

• Cl-

• Rb+

• OH-

• H+

What color is the gas produced at the anode?

• Colorless

• Greenish-yellow

• Blue

• Red

What happens to the pH of the solution around the cathode?

• It becomes neutral

• It decreases

• It remains the same

• It increases

What color does the Lima solution turn around the cathode?

• Yellow

• Red

• Green

• Blue

What is the final color change observed at the anode due to chlorine gas reaction?

• Red to colorless

• Blue to red

• Green to yellow

• Yellow to blue