An ore on treatment with dilute hydrochloric acid produces brisk effervescence. What type of ore is this? What steps will be required to obtain metal from the enriched ore?

  • 2

it must be a carbonate ore because the reaction is releasing carbon di oxide.

reaction which takes place, ZnCO3 + HCl - 2ZnCl2 + H2O + CO2

let us take an example of calcinating zinc calamine(ZnCO3)

first of all, it is calcinated with insufficient oxygen

ZnCO3 - ZnO + CO2

than, the ZnO obtained is reduced using carbon in form of coke.

ZnO + C - Zn + CO

  • 59

it must be a carbonate ore because the reaction is releasing carbon di oxide.

reaction which takes place, ZnCO3 + HCl - 2ZnCl2 + H2O + CO2

let us take an example of calcinating zinc calamine(ZnCO3)

first of all, it is calcinated with insufficient oxygen

ZnCO3 - ZnO + CO2

than, the ZnO obtained is reduced using carbon in form of coke.

ZnO + C - Zn + CO

  • 24
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