nZn = 0.65 / 65 = 0.01 (mol)
Zn + 2HCl => ZnCl2 + H2
0.01..................0.01......0.01
mZnCl2 = 0.01 * 136 = 1.36 (g)
VH2 = 0.01 * 22.4 = 0.224 (l)
nZn=0,65/65=0,01(mol)
Zn+ 2HCl-------> ZnCl2+ H2
0,01 0,01 0,01 (mol)
a) m ZnCl2=0,01*136=1,36 (gam)
b)V H2(đktc)=0,01*22,4=0,224(lit)