2NaHCO3 = Na2CO + CO2 +H2O M=62
168 62
X 9
X=9*168/62=24.4g
W(Na2CO3)=(146-24.4)/146 *100% =83.3%
n(Al)=0.1mol n(Al(OH)3)=0.05mol
n1=0.05*3=0.15mol OH V1=37.5mL
n2=4*0.1-0.05=0.35mol V2=87.5mL
2NaHCO3 = Na2CO + CO2 +H2O M=62
168 62
X 9
X=9*168/62=24.4g
W(Na2CO3)=(146-24.4)/146 *100% =83.3%
n(Al)=0.1mol n(Al(OH)3)=0.05mol
n1=0.05*3=0.15mol OH V1=37.5mL
n2=4*0.1-0.05=0.35mol V2=87.5mL