Felingov reagens

igor996's picture

Od 5g kristalnog bakar sulfata pripremljen je Felingov reagens. Koliko se etanala može oksidovati tim reagensom. Hvala.

milicaradenkovic's picture

CH3CHO+2CuSO4+4NaOH------------------->Cu2O+2Na2SO4+2H2O+CH3COOH

5 g-------------------------250 g/mol

x g----------------------------160 g/mol

kristalni bakar sulfat je CuSO4*5H2O

x=5*160/250=3.2 g CuSO4

n(CuSO4)=m/Mr=3.2/160=0.02 mol

n(CH3CHO)=n(CuSO4)/2=0.02/2=0.01 mol

m(CH3CHO)=n(CH3CHO)*Mr=0.01*44=0.44 g