Question

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

Answer 1

Carbonate ores on reacting with HCl give brisk effervescence(liberating CO2)
So the method of calcination is used.
Let’s take ZnCO3 for example
Step 1: it needs to be heated in the absence of oxygen
ZnCO3 ——> ZnO + CO2
Step 2: this oxide is then reducing a reducing agent like carbon
ZnO + C —> Zn + CO



Hope it helps ya

Answer 2

brisk effervesence means Co2 is produced.


type of ore =carbonate
eg :- ZnCo3 .

rxn-- ZnCo3------^-------->ZnO +CO2

ZnO + C------------>Zn +CO


HOPE IT HELPS YOU