Đáp án:
a) mKClO3=91,875 gam
b) mKClO3=21,4375 gam
Giải thích các bước giải:
2KClO3 ---> 2KCl + 3O2
a) CH4 +2O2 ---> CO2 + 2H2O
2H2 + O2 ---> 2H2O
Ta có: nO2 =2nCH4 + 1/2nH2=0,5.2+0,25.1/2=1,125 mol
-> nKClO3=2/3nO2=0,75 mol -> mKClO3=0,75.(39+35,5+16.3)=91,875 gam
b) Ta có: nAl=6,75/27=0,25 mol; nZn=9,75/65=0,15 mol
4Al + 3O2 --->2Al2O3
2Zn + O2 ---> 2ZnO
-> nO2=3/4nAl+1/2nZn=0,25.3/4+0,15.1/2=0,2625 mol
-> nKClO3=2/3nO2=0,175 mol -> mKClO3=0,175(39+35,5+16.4)=21,4375 gam
