2. J03/3/6 (f) Zinc can be extracted by
heating zinc oxide with carbon.
–ZnO + C
→ Zn +
CO
–Explain why carbon is a reducing agent (reductant) in
this reaction. [1]
–
–
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3. N03/3/3. Zinc blende is
the common ore of zinc. It is usually found mixed with an ore of lead and
traces of silver.
–(a) (i) Describe how zinc blende is changed into zinc
oxide. [2]
–