\(Ba+2HCl\left(0,1\right)\rightarrow BaCl_2\left(0,05\right)+H_2\left(0,05\right)\)
\(m_{HCl}=50.7,3\%=3,65g\Rightarrow n_{HCl}=0,1mol\)
\(\Rightarrow V_{H_2}=0,05.22,4=1,12l\)
\(m_{BaCl_2}=0,05.208=10,4g\)
a)mHCl = 50*7.3/100=3.65g
nHCl = 3.65/36.5=0.1 mol
Ba + 2HCl -> BaCl2 + H2
(mol) 0.1 0.05 0.05
vH2= 0.05*22.4 = 1.12(l)
b) mBaCl2 = 0.05*208=10.4g