a/ PTHH: Zn + 2HCl ===> ZnCl2 + H2
b/Tỉ lệ: 1 : 2 : 1 : 1
c/ nZn = 65 / 65 = 1 mol
=> nZnCl2 = nH2 = nZn = 1 mol
=> mZnCl2 = 1 x 136 = 136 gam
mH2 = 1 x 2 = 2 gam
PTHH: Zn + 2HCl → ZnCl2 + H2
Tỉ lệ 1:2:1:1
nZn= \(\frac{65}{65}\)= 1(mol)
Từ PTHH: Zn + 2HCl→ ZnCl2 + H2
1 mol 2mol 1mol 1 mol
→ mZnCl2 = nZnCl2 *MZnCl2 = 1* 136 =136 (g)
→ mH2 = nH2 * MH2 = 1 * 2= 2 (g)