By electrolytic reduction method, the total number of metals that can be best extracted from their aqueous solutions among following will be: Fe,Cu,Ag,Na,K,Zn,Mg,Mn,Cr,CaandAl.

Question

By electrolytic reduction method, the total number of metals that can be best extracted from their aqueous solutions among following will be: Fe,Cu,Ag,Na,K,Zn,Mg,Mn,Cr,CaandAl. (A)  (B)  (C)  (D)

Tardigrade Admin · Accepted Answer

A metal can only be extracted from its aqueous solution if its standard reduction potential is positive. In case of highly electropositive metal the reduction of water will occur.
From the given metals only these can be extracted,

C u, A g

Q. By electrolytic reduction method, the total number of metals that can be best extracted from their aqueous solutions among following will be: Fe,Cu,Ag,Na,K,Zn,Mg,Mn,Cr,CaandAl.

A metal can only be extracted from its aqueous solution if its standard reduction potential is positive. In case of highly electropositive metal the reduction of water will occur. From the given metals only these can be extracted, Cu,Ag

Q. By electrolytic reduction method, the total number of metals that can be best extracted from their aqueous solutions among following will be:
$F e, C u, A g, N a, K, Z n, M g, M n, C r, C aan d A l .$

A metal can only be extracted from its aqueous solution if its standard reduction potential is positive. In case of highly electropositive metal the reduction of water will occur.
From the given metals only these can be extracted,
$C u, A g$