Commercial Electrolytic Cells (VCE SSCE Chemistry): Quizzes
📚Quizzes
Practise the questions
10 questions from this quiz
ShowHide
Practise the questions
10 questions from this quiz
What energy conversion occurs in commercial electrolytic cells?
What energy conversion occurs in commercial electrolytic cells?
Electrical to chemical energy
What two products does the Downs cell produce?
What two products does the Downs cell produce?
Sodium metal and chlorine gas
Why is added to molten in the Downs cell?
Why is added to molten in the Downs cell?
Lowers melting point from 801°C to ~600°C
Why must an iron mesh screen separate products in the Downs cell?
Why must an iron mesh screen separate products in the Downs cell?
Products react spontaneously together
What ions can pass through the membrane in membrane cells?
What ions can pass through the membrane in membrane cells?
Only positive ions
At what temperature range do membrane cells operate?
At what temperature range do membrane cells operate?
to
What happens to less reactive impurities like gold during copper electrorefining?
What happens to less reactive impurities like gold during copper electrorefining?
Fall as anode mud
What role does molten cryolite play in the Hall-Héroult cell?
What role does molten cryolite play in the Hall-Héroult cell?
Solvent for alumina
Why are carbon anodes described as reactive in the Hall-Héroult cell?
Why are carbon anodes described as reactive in the Hall-Héroult cell?
They react with oxygen and are consumed
Why can't aqueous be used to produce sodium metal?
Why can't aqueous be used to produce sodium metal?
Water is a stronger oxidising agent