a) Write chemical equations for the reactions involved in the extraction of zinc from zinc blende.
b) 48.8g of zinc oxide were reduced with carbon.
i) Caculate the maximum mass of zinc obtained
ii) Caculate the minimum mass of carbon required for complete reduction
please help?
2016-12-05 9:56 am
回答 (1)
2016-12-06 10:39 am
a)ZnS+O2->Zn+SO2
bi)ZnO+C->Zn+CO2
no. of mol of ZnO=48.8/(65.4+16)=0.600mol
no. of mil of ZnO=no. of mol of Zn
mass of Zn=0.600(65.4)=39.2g
bii)no. of mol of ZnO=no. of mol of C
min mass of C needed=0.600(12)=7.19g
bi)ZnO+C->Zn+CO2
no. of mol of ZnO=48.8/(65.4+16)=0.600mol
no. of mil of ZnO=no. of mol of Zn
mass of Zn=0.600(65.4)=39.2g
bii)no. of mol of ZnO=no. of mol of C
min mass of C needed=0.600(12)=7.19g
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