Số mol BaCl2:
nBaCl2=190/208=0,9 (mol)
nH2SO4=9,8/98=0,1(mol)
BaCl2 +H2SO4--->BaSO4 +2HCl
Vì 0,9>0,1
=> BaCl2 dư
=> Tính theo H2SO4.
BaCl2 +H2SO4--->BaSO4 +2HCl
0,1..............0,1.........0,1...........0,2(mol)
mBaSO4 =0,1.233=23,3(g)
mHCl=0,2.36,5=7,3(g)
mBaCl2=0,1.208=20,8(g)
#Walker
nBaCl2 = 0.91 mol
nH2SO4 = 0.1 mol
BaCl2 + H2SO4 --> BaSO4 + 2HCl
Bđ: 0.91____0.1
Pư: 0.1_____0.1________0.1_____0.2
Kt: 0.81____0__________0.1_____0.2
mBaCl2 dư = 0.81*208 = 168.48 g
mBaSO4 = 23.3 g
mHCl = 7.3 g
n BaCl 2 = 190/208= 0, 91 g
nH2SO4= 9,8 / 98=0,1 mol
=> CaCl2 dư
m = 0,1 .233= 23,3
m BACl2 dư= 190, 0,1 . 208=169,2 (g)
m HCl =0,1 . 2 . 36,5= 7,3 g
BaCl2 +H2SO4--->BaSO4 +2HCl
Ta có
n\(_{BaCl2}=\frac{190}{208}=\)0,9 mol
n\(_{H2SO4}=\frac{9,8}{98}=0,1mol\)
=> BaCl2 dư
Theo pthh
n\(_{BaSO4}=n_{H2SO4}=0,1mol\)
m =0,1.233=23,3(g)
n\(_{HCl}=2n_{H2SO4}=0,2mol\)
m\(_{HC_{ }l}=0,2.36,5=7,3\left(g\right)\)
n\(_{BaCl2}=n_{H2SO4}=0,1mol\)
m\(_{BaCl2}=0,1.208=20,8\left(g\right)\)