–(iii) Cu(NO3)2 (heat) → ................................. +
............................
–
+ ...........................
[4]
6. J02/3/1. In 1886, the
modern electrolytic process for the extraction of aluminium
was discovered in the USA by C. Hall.
–(a) Before this discovery, the only
method of extracting the metal was by displacement.
– (i)
Name a metal that can displace aluminium from aluminium chloride. [1]
– (ii)
Write a word equation for this displacement reaction. [1]