1.

Magnesium is a valuable, light weight metal used as a structural material as well as in alloy hatteries and in chemical s . Although magnesium is plentiful in Earth s maire found in the sea water after sodium). There is about 1.3 8 of magnesium in every kilogram of se water. The process for obtaining magnesium from en water employs all three types of reaction Le precipitation, acid-base, and redox reactions Redox reaction takes place in the extraction of Mg :

Answer»

In the electronlytic cell when FUSED `MgCI_(2)` is subjected to electrolysis
When fused `MgCO_(3)` is heated
When fused `MgCO_(2)` is strongly heated
Both (b) and (c )

Solution :When fused `MgCI_(2)` undergoes electolysis, reactions takes place at anode and cathode are At anode : (OXIDATION) : `2CI^(-) rarr CI_(2(g))+2e^(-)`
At Cathode (REDUCTION):
`Mg^(+2) +2e^(-) rarr Mg_((s))`


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