1.

Three faradays electricity was passed through an aqueous solution of irono (II) romide. The weight of iron metal (at. At.=56) deposited at the cathode (in gm) is

Answer»

56
84
112
168

Solution :`FE^(2+)+2E^(-)TOFE,E_(Fe)=(56)/(2)=28`
`W_(Fe)=E_(Fe)xx"Number of faraday"=28xx3=84gm`


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