Β 
VIEW IN FULL SCREEN

Electrolysis in Experiment

Electrolysis in Experiment

Loading page description...

In electrolysis of aqueous solutions you must use unreactive materials (such as graphite) for electrodes to prevent unwanted reactions between the electrode and the solution. Aqueous salt solutions contain hydrogen, hydroxide, metal and non metal ions. In dilute halide salt solutions the oxygen ions outnumber the halide ions so oxygen forms at the anode.

Electrolysis of Aqueous Solutions

There can be many products of the electrolysis of aqueous solutions including hydrogen, oxygen or halide gases and solid metals. You can determine which gas is produced as oxygen gas will relight a glowing splint, hydrogen gas will produce a squeaky pop sound with a glowing splint and chlorine gas turns damp blue litmus paper red.

Production of gases

In the electrolysis of molten salts only the metal and non metal ions of the salt are present (no hydrogen or hydroxide from water). The salt must be melted by a heat source, e.g. bunsen burner. Electrolysis of lead bromide is commonly used to demonstrate molten salt electrolysis due to its relatively low melting point.

Electrolysis of Molton Ionic Salts

In molten electrolyte electrolysis, a metal is always formed at the cathode and non-metal is formed at the anode. Halide gases such as chlorine or bromine are commonly produced. Bromine gas is brown and pungent smelling.

Electrolysis of Molton Ionic Salts

#0

βœ…

Loading ...

trasparent34.png
FULL SCREEN
SHOW ANSWER
Image_edited.png

Did you know?

By simply logging in, you would be able to access 50% more questions.

#0

βœ…

Loading ...

trasparent34.png
FULL SCREEN
SHOW ANSWER
Image_edited.png

I'm a paragraph. Click here to add your own text and edit me. It's easy.

FULL SCREEN
Image.png

Have you found the questions useful?

Sign up to access 50% more of them for free πŸ˜€

End of page

Β