Ta co pthh
Zn + 2HCl \(\rightarrow\) ZnCl2 + H2
Theo pthh
nZn=\(\dfrac{6,5}{65}=0,1mol\)
a, Theo pthh
nH2=nZn=0,1 mol
\(\Rightarrow\) VH2=0,1 .22,4=2,24 l
b, Theo pthh
nZnCl2=nZn=0,1 mol
\(\Rightarrow\) Nong do mol cua chat sau phan ung la
CM= \(\dfrac{n}{V}=\)\(\dfrac{0,1}{0,2}=0,5M\)
a) ta có: nZn= 6,5:65=0,1(mol)
PTHH: Zn + 2HCl -> ZnCl2 + H2
Theo pt ta có: nH2=nZn=0,1(mol)
-> VH2=0,1.22,4=2,24(l)
b) Theo pt ta có: nZnCl2=nZn=0,1(mol)
CM=n/V=0,1/0,2=0,5M