m g 0,02 moli
CH=O COOH
l l
(CH2OH)4 + Ag2O --> (CH2OH)4 + 2Ag
l l
CH2OH CH2OH
180 1
m = 180x0,02/1 = 3,6 g glucoza s-a transformat in cei 0,02 moli ac. gluconic
daca pur = 3,6 g .......................... p%
impur = 4g ........................... 100%
=> p% = m.purax100/m.imp
= 3,6x100/4 = 90%
procesul = de oxidoreducere (redox), p% = 90%
=> D.