Răspuns:
MC8H8O2=8x12+8x1+2x16=136g/mol
MNaOH=23+16+1=40g/mol
136g............................40g
CH3-COOC6H5 + NaOH → CH3-COONa + C6H5-OH
37g................................xg
x=37x40/136=10,88g
ms=mdx100/C =10,88x100/40=27,2g solutie NaOH
Explicație: