Răspuns:
Explicație:
Buna ziua!
M C₆H₅-OH =12×6+6×1+16=94g/mol
M NaOH = 23+16+1=40g/mol
M C₆H₅-O⁻Na⁺ = 12×6+5×1+16+23=72+21+23=116 g/mol
ω/100=md/ms⇒ms=ω×ms/100=20×50/100=10 g NaOH
10g x
C₆H₅-OH + NaOH ⇒ C₆H₅-O⁻Na⁺ + H₂O
40g 116g
x=116×10/40=116/4=29 g
Succes!
