Ba + 2H2O --> Ba(OH)2 + H2
BaO + H2O --> Ba(OH)2
nH2= 0.56/22.4=0.025 (mol)
=> nBa= 0.025 (mol)
mBa= 0.025*137=3.425g
mBaO= 6.485-3.425=3.06g
nBaO= 0.02 (mol)
%Ba= 3.425/6.485*100%= 52.81%
%BaO= 100 - 52.81= 47.19%
b) nBa(OH)2= 0.025+0.002= 0.045 (mol)
mBa(OH)2 = 0.045*171=7.695g
\(n_{H_2}\)=\(\frac{0.56}{22.4}=0.025mol\)
Ba +2H2O\(\xrightarrow[]{}\)Ba(OH)2+H2\(\uparrow\)
mol 0.025 0.025 0.025
BaO+H2O\(\xrightarrow[]{}\)Ba(OH)2
mol 1 1
=>mBa=0.025.137=3.425g
mBaO=3.06g
=>nBaO=\(\frac{3.06}{153}=0.02mol\)
o/omBa=\(\frac{3.425\cdot100}{6.485}\)=52.8o/o
o/omBaO=47.2o/o
b..nBa(OH)\(_2\)=0.02+0.025=0.045mol
mBa(OH)\(_2\)=0.045.171=7.695g