Question 1
In the production of potassium metal, the source of electrons in the reduction of K
+ ions is
◦ H
2(g)
◦ Na(g)
◦ CO(g)
◦ CaO(s)
◦ electrolysis
Question 2
Metallic sodium is obtained commercially from molten sodium chloride by
◦ chemical reduction with magnesium.
◦ flotation.
◦ electrolysis.
◦ zone refining.
◦ roasting.