pthh: \(Ba\left(OH\right)_2+2HCl\rightarrow BaCl_2+2H_2O\)
bđ_____1________0,3
pư____0,15_______0,3_____0,15
kt____0,85_______0_______0,15
\(n_{Ba\left(OH\right)_2}=1mol;n_{HCl}=0,2.1,5=0,3mol\)
C/m đc sau pư: Ba(OH)2 dư, HCl hết
a) \(m_{Ba\left(OH\right)_2}=0,85.171=145,35g\)
b) \(C_{MddBaCl_2}=\dfrac{0,15}{0,7}\approx0,214M\)
\(C_{MddBa\left(OH\right)_2dư}=\dfrac{0,85}{0,7}=1,214M\)