Chemistry 5070 · O Level · Extraction of metals

Extraction of metals — practice question

The diagram illustrates apparatus that can be used to obtain aluminium from its ore. What are J, K and L?

  • AJ: negative electrode; K: aluminium oxide + cryolite; L: aluminium
  • BJ: negative electrode; K: cryolite; L: aluminium oxide
  • CJ: positive electrode; K: aluminium oxide; L: cryolite
  • DJ: positive electrode; K: aluminium oxide + cryolite; L: aluminium

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