\(CT:C_nH_{2n+1}COOH\)
\(n_{NaOH}=0.1\cdot0.5=0.05\left(mol\right)\)
\(C_nH_{2n+1}COOH+NaOH\rightarrow C_nH_{2n+1}COONa+H_2O\)
\(0.05.......................0.05\)
\(M=\dfrac{3}{0.05}=60\left(\dfrac{g}{mol}\right)\)
\(\Leftrightarrow14n+46=60\)
\(\Leftrightarrow n=1\)
\(CT::CH_3COOH\) ( Axit axetic)