At a site, low grade copper ores are available and zinc and iron scrap – InterviewSolution

1.	At a site, low grade copper ores are available and zinc and iron scraps are also available. Which of the two scraps will be more suitable for reducing the leached copper ore and why ?
Answer» Solution : The`E^(@)`valuefor theredoxcouple` ZN^(2+)//Zn(-076 V) `is morenegativethat thastof` Fe ^( 2 +)//Fe ` (`-044V`) redox couple.Therefore,zinc is morereactivethan ironand hencereductionwill befasterin caseifzinc scrapsare used. Butzinc is acostliermetaliron sousingiron SCARPS would bemoreeconomical.

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