24.5 redox and qualitative analysis Flashcards
1
Q
colour of MnO4-
A
purple
2
Q
colour change in reaction of Fe2+ and MnO4-
A
purple to colourless
3
Q
how is Fe2+ oxidised to Fe3+
A
react with MnO4- ions
4
Q
reaction of Fe2+ and MnO4 -
A
5
Q
colour of Mn2+
A
colourless
6
Q
colour of Fe3+
A
orange-brown
7
Q
colour of Fe2+
A
pale green
8
Q
how is Fe3+ reduced to Fe2+
A
react with I-
9
Q
reaction of Fe3+ and I-
A
10
Q
colour change in reaction of Fe3+ and I-
A
orange-brown to brown
11
Q
colour of Cr2O7 2-
A
orange
12
Q
colour of Cr3+
A
green
13
Q
colour of Cr2+
A
pale blue
14
Q
how is Cr2O7 2- reduced to Cr3+
A
react with Zn
15
Q
reaction of Cr2O7 2- and Zn
A
18
Q
reaction of Cr3+ and excess zinc
A
27
Q
reaction of Cu2+ and I-
A
29
Q
reaction when Cu2O reacts with H2SO4
A
