1.

Na is used in the reduction of Znsalt because

Answer»

`E_(Zn("oxi"))^(@) gt E_(Na("oxi"))^(@)`
`E_(Zn("RED"))^(@) lt E_(Na("red"))^(@)`
`E_(Zn("oxi"))^(@) lt E_(Na("oxi"))^(@)`
Both a and b

Solution :Metal having higher OXIDATION potential (or lesser `E_("red")^(@)`) can REPLACE metals having lesser oxidation potential
`because` oxidation potential of Nais more than that of Zn
`therefore` Na is USED to reduce Zn salts


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