nHCl = 0,2 *1=0,2 mol
Ca(OH)2 + 2HCl --> CaCl2 + 2H2O
0,1 0,2 mol
VCa(OH)2=0,1*22,4=2,24 l
V ddCa(OH)2= 0,1 / 2 =0,05lít =50ml dd
2HCl + Ca(OH)2 \(\rightarrow\) CaCl2 + 2H2O
nHCl = 0,2.1 = 0,2 mol
Theo pt: nCa(OH)2 = 0,5nHCl = 0,1 mol
=> \(V_{Ca\left(OH\right)_2}=0,1:2=0,05\) (l)
Theo pt: nCaCl2 = nCa(OH)2 = 0,1 mol
CM CaCl2 = 0,1 : (0,2+0,05) = 0,4M
\(200ml=0,2l\)
\(n_{HCL}=C_M.V_{dd}=1.0,2=0,2\left(mol\right)\)
\(PTHH:2HCL+Ca\left(OH\right)_2\rightarrow CaCL_2+2H_2O\)
\(\left(mol\right).....0,2\rightarrow.....0,1.....0,2\)
\(V_{ddCa\left(OH\right)_2}=\dfrac{n}{C_M}=\dfrac{0,1}{2}=0,05\left(l\right)\)
\(V_{ddCa\left(OH\right)_2}=V_{ddHCL}+V_{ddCa\left(OH\right)_2}=0,2+0,5=0,25\left(l\right)\)
\(C_{M_{CaCL_2}}=\dfrac{n}{V_{dd}}=\dfrac{0,1}{0,25}=0,4\left(M\right)\)