1)CuO+2HCl=CuCl2+H2O n(CuO)=8/80=0.1моль n(CuCl2)=n(CuO)=0.1
2)2KMnO4=K2MnO4+MnO2+O2 n(KMnO4)=100/159=0.6 n(O2)=0.6/2=0.3 V(O2)=0.3*22.4=6.72
1. CuO+2HCl=CuCl2+H2O
1) n(CuO)=m(CuO)/M(CuO)=8/80=0.1
2) n(CuO)=n(CuCl2)=0.1
2. 2KMnO4=K2MnO4+MnO2+O2
1) n(KMnO4)=m(KMnO4)/M(KMnO4)=100/158=0.6329
2) n(KMnO4)/2=n(O2)=0.6329/2=0.31646
3) V(O2)=n(O2)*V=0.31646*22.4=7.09
1)CuO+2HCl=CuCl2+H2O n(CuO)=8/80=0.1моль n(CuCl2)=n(CuO)=0.1
2)2KMnO4=K2MnO4+MnO2+O2 n(KMnO4)=100/159=0.6 n(O2)=0.6/2=0.3 V(O2)=0.3*22.4=6.72
1. CuO+2HCl=CuCl2+H2O
1) n(CuO)=m(CuO)/M(CuO)=8/80=0.1
2) n(CuO)=n(CuCl2)=0.1
2. 2KMnO4=K2MnO4+MnO2+O2
1) n(KMnO4)=m(KMnO4)/M(KMnO4)=100/158=0.6329
2) n(KMnO4)/2=n(O2)=0.6329/2=0.31646
3) V(O2)=n(O2)*V=0.31646*22.4=7.09