\(n_{HCl}=n_{NaOH\left(dư\right)}=0.18\left(mol\right)\)
\(n_{NaOH\left(pư\right)}=0.25-0.18=0.07\left(mol\right)\)
0.07 (mol) NaOH thì vào 20 (g) chất béo
x(mol)..............................106 (g) chất béo
\(x=\dfrac{10^6\cdot0.07}{20}=3500\)
\(m=3500\cdot40=140000\left(g\right)\)