reduction tests/fehling's test Flashcards
1
Q
composition of fehling’s solution
A
CuSO4 (copper sulfate)
KNaC4H4O6 4H2O (potassium sofium tartrate/ rochelle salt)
2
Q
negative result
A
sucrose, starch
3
Q
list the 3 disaccharides
A
sucrose, maltose, lactose
4
Q
what is the positive reaction
A
red precipitate
5
Q
what are the samples that are positive result
A
glucose, fructose, maltose, lactose
6
Q
fehling’s test chemical reaction
A
7
Q
purpose of the test
A
for the determination of reducing and non reducing sugar present in carbohydrates
8
Q
list common monosaccharides
A
glucose, galactose, glyceraldehyde, fructose, ribose & xylose
9
Q
what is the negative reaction
A
blue
10
Q
samples in fehlings test
A
glucose, fructose, maltose, sucrose, lactose, starch
11
Q
acetal structure
A
C-O-C-O-C
12
Q
reagent used
A
fehling’s solution
13
Q
hemiacetal structure
A
C-O-C-OH
