CH3-CH2-COOH+NaOH=CH3-CH2-COONa+H2O
1 1
m(CH3-CH2-COOH)=200*0,0925=18,5г; n(CH3-CH2-COOH)=18,5/74=0,25моль;
n(NaOH)=0,25моль; m(NaOH)=0,25*40=10г;
W(NaOH)=10/200=0,05(5%).
CH3-CH2-COOH+NaOH=CH3-CH2-COONa+H2O
1 1
m(CH3-CH2-COOH)=200*0,0925=18,5г; n(CH3-CH2-COOH)=18,5/74=0,25моль;
n(NaOH)=0,25моль; m(NaOH)=0,25*40=10г;
W(NaOH)=10/200=0,05(5%).