Cu+2HCl=CuCl2+H2
1) w(Cu чист.) = m(смеси)-m(примеси) =100%-11.9%= 88.1% = 0.881
2) m(Cu чист) = w(чист. в-ва)*m(смеси) = 0.881*20г = 17.62г
3) n(Cu) = m/M = 17.62/64 = 0.28 моль
4) n(Cu) = n(H2) = 0.28 моль
5) V(H2) = n*Vm = 0.28*22.4 = 6.27л
Copyright © 2024 SCHOLAR.TIPS - All rights reserved.
Answers & Comments
Cu+2HCl=CuCl2+H2
1) w(Cu чист.) = m(смеси)-m(примеси) =100%-11.9%= 88.1% = 0.881
2) m(Cu чист) = w(чист. в-ва)*m(смеси) = 0.881*20г = 17.62г
3) n(Cu) = m/M = 17.62/64 = 0.28 моль
4) n(Cu) = n(H2) = 0.28 моль
5) V(H2) = n*Vm = 0.28*22.4 = 6.27л