The chief ore of `Zn` is the sulphide `ZnS.` The are is concentrated by froth floatation process and then heated in air to convert `ZnS` to `ZnO`. `2ZnS+3O_3 80% rarr 2ZnO+2SO.` ZnO+H_2SO_4 100% rarr Zn SO_4+H_2O and 2ZnSO_4+2H_2O 80% rarr 2Zn+2Hn+2H_2SO_4+O_2`. The number of moles of `ZnS` required for producing 2 moles of `Zn` will be :

The chief are of Zn is the sulphide , ZnS. The are is concentrated by froth floation process and then heated in air to convert Zns to Zno. 2ZnS+30_(2)overset(80%)to 2ZnO+ 2SO_(2) ZnO+H_(2)SO_(4)overset(100%)to ZnSO_(4)+ H_(2) 2ZnSO_(4)+2H_(2)Ooverset(80%)to 2Zn+ 2H_(2)SO_(4)+O_(2) The number of moles of ZnS required for producing 2 moles of Zn will be:

Chief ore of Zn is ZnS . The ore is concentrated by froth flotation process and then heated in air to convert ZnS to ZnO . ltntgt 2 ZnS + 3O_(2) rarr 2 ZnO + 2 SO_(2) …(i) ZnO , thus formed is treated with dilute H_(2) SO_(4) . ZnO + H_(2) SO_(4) rarr ZnSO_(4) + H_(2) O ....(ii) On electrolysis of ZnSO_(4(aq)), Zn metal is produced. 2 ZnSO_(4) + H_(2) O rarr 2 Zn + 2H_(2) SO_(4) + O_(2) ....(iii) How many kilomoles of NaOH are required to dissolve all the ZnO produced in reaction (ii) ?

Chief ore of Zn is ZnS . The ore is concentrated by froth flotation process and then heated in air to convert ZnS to ZnO . ltntgt 2 ZnS + 3O_(2) rarr 2 ZnO + 2 SO_(2) …(i) ZnO , thus formed is treated with dilute H_(2) SO_(4) . ZnO + H_(2) SO_(4) rarr ZnSO_(4) + H_(2) O ....(ii) On electrolysis of ZnSO_(4(aq)), Zn metal is produced. 2 ZnSO_(4) + H_(2) O rarr 2 Zn + 2H_(2) SO_(4) + O_(2) ....(iii) ZnO on dissolution in NaOH gives

Chief ore of Zn is ZnS . The ore is concentrated by froth flotation process and then heated in air to convert ZnS to ZnO . ltntgt 2 ZnS + 3O_(2) rarr 2 ZnO + 2 SO_(2) …(i) ZnO , thus formed is treated with dilute H_(2) SO_(4) . ZnO + H_(2) SO_(4) rarr ZnSO_(4) + H_(2) O ....(ii) On electrolysis of ZnSO_(4(aq)), Zn metal is produced. 2 ZnSO_(4) + H_(2) O rarr 2 Zn + 2H_(2) SO_(4) + O_(2) ....(iii) What mass of Zn will be obtained from an ore containing 225 kg of ZnS ? (Zn = 65, S = 32, O = 16, H = 1) .

Chief ore of Zn is ZnS . The ore is concentrated by froth flotation process and then heated in air to convert ZnS to ZnO . ltntgt 2 ZnS + 3O_(2) rarr 2 ZnO + 2 SO_(2) …(i) ZnO , thus formed is treated with dilute H_(2) SO_(4) . ZnO + H_(2) SO_(4) rarr ZnSO_(4) + H_(2) O ....(ii) On electrolysis of ZnSO_(4(aq)), Zn metal is produced. 2 ZnSO_(4) + H_(2) O rarr 2 Zn + 2H_(2) SO_(4) + O_(2) ....(iii) What volume of 98 % H_(2) SO_(4) (by weight, density = 1.8 g//mL ) is required in step (ii) ?

Zn+H_(2)SO_(4)rarrZnSO_(4)+H_(2) Zn undergoes -

2NaOH+Zn(OH)_(2) darr to Na_(2)ZnO_(2)+2H_(2)O

The reaction 2ZnS +3O_(2) rarr2ZnO +2SO_(2) in the metallurgical process of zinc is called

Balance the following reactions by oxidation number method Zn+HNO_(3) rarr Zn ( NO_(3))_(2) + NO + H_(2) O