V(vinegar)=100 mL
d(AcOH)=1.05 g/mL
x=0.045
"V(AcOH)=x*V(vinegar)"
"m(AcOH)=d(AcOH)*V(AcOH)=d(AcOH)*x*V(vinegar)"
"n(AcOH)=m(AcOH)\/M(AcOH)=d(AcOH)*x*V(vinegar)\/M(AcOH)"
"m(NaOH)=d(AcOH)*x*V(vinegar)*M(NaOH)\/M(AcOH)" "m(NaOH)=n(AcOH)*M(NaOH)" "n(NaOH)=m(NaOH)\/M(NaOH)=n(AcOH)"
m(NaOH)=d(AcOH)*x*V(vinegar)*M(NaOH)/M(AcOH)
m(NaOH)=1.05 (g/ml)*0.045*100 (ml)*40(g/mol)/ 60 (g/mol) = 3.15 g
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