nHCl=0,1(mol)
PT: 2HCl + Ca(OH)2 -> CaCl2 + 2H2O
vậy: 0,1-------->0,05--------->0,05(mol)
=> VCa(OH)2=n/CM=0,05/1=0,05(lít)=50 ml
b) Vd d sau phản ứng=0,1+0,05=0,15(lít)
=> CM CaCl2=n/V=0,05/0,15=0,33(M)
c) mCaCl2=n.M=0,05.111=5,55(g)
Ca(OH)2 + 2HCl -> CaCl2 + 2H2O
nHCl=0,1(mol)
Theo PTHH ta có:
nCa(OH)2=\(\dfrac{1}{2}\)nHCl=0,05(mol)
nCaCl2=nCa(OH)2=0,05(mol)
Vdd Ca(OH)2=\(\dfrac{0,05}{1}=0,05\left(lít\right)\)
mCaCl2=111.0,05=5,55(g)
CM dd CaCl2=\(\dfrac{0,05}{0,15}=\dfrac{1}{3}M\)
a) nHCl=0.1*1=0.1(mol)
Ta có phương trình sau
2 HCl + Ca(OH)2 ➞ CaCl2 + 2 H2O
....0.1........0.05............0.1..........................(mol)
V=0.05/1=0.05(l)=50ml
b)CM (CaCl2)=0.1/(0.1+0.05)=2/3(M)
c)mCaCl2=111*0.1=11.1(g)