Electrolysis of Molten Ionic Compounds

JavaScript isn't enabled in your browser, so this file can't be opened. Enable and reload.

Chemistry 270320

Name

Q1. In the electrolysis of molten sodium chloride, what is produced at the positive electrode?

Sodium

Chlorine

Chloride

Sodium chloride

Clear selection

Q2. Explain your answer to Q1 using ideas about ions.

Q3. In the electrolysis of molten magnesium iodide, what is produced at the negative electrode?

Magnesium

Iodine

Iodide

Magnesium iodide

Clear selection

Q5. Why does electrolysis require the ionic compounds to be melted?

So that the electrons can move

So that the ions can move

So that there is enough energy for the reaction to occur

Clear selection

Q6. What happens to Mg2+ ions at the negative electrode?

They lose an electron

They lose two electrons

They gain and electron

They gain two electrons

Clear selection

Q6. Why can't aluminium be extracted by heating with carbon?

Q7. In the extraction of aluminium by electrolysis why do the positive electrodes have to be replaced?

They get coated with aluminium

The react with the oxygen produced and burn away

The melt in the heat

Clear selection

Q8. Why does the metal extraction by electrolysis require so much energy?

Submit

Clear form

Never submit passwords through Google Forms.

This content is neither created nor endorsed by Google. Report Abuse - Terms of Service - Privacy Policy