CaCl2 + 2AgNO3 ---> 2AgCl↓ + Ca(NO3)2
TA có nCaCl2=0,2.1=0,2
nAgNO3=2.0,075=0,15
mà 0,2>0,15/2
=> CaCl2 dư
=> nCaCl2 dư =0,2-0,15/2=0,125
nAgCl=nAgNO3=0,15
Ca(NO3)2 =0,15/2=0,075
=> m kết tủa =0,15.143,5=21,525g
CM ddCa(NO3)2=0,075/(0,2+0,075)=0,27M
CM ddCaCl2 dư=0,125/(0,2 + 0,075)=0,45 M
nCaCl2 = 0.2 mol
nAgNO3 =0.15 mol
CaCl2 + 2AgNO3 --> Ca(NO3)2 + 2AgCl
Bđ: _0.2______0.15
Pư: _0.075____0.15________0.075_____0.15
Kt: 0.125_____0__________0.075______0.15
mAgCl = 0.15*143.5 = 21.525 g
CM Ca(NO3)2 = 0.075/( 0.2 + 0.075) = 3/11 M
CM CaCl2 dư = 0.125/0.2 = 0.625 M