15.2.4 - The chemistry of Vanadium

Question 1

Give the fomula of these oxidation states of vanadium.
a) +2
b) +3
c) +4
d) +5

Answer 1

a) V^2+
b) V^3+
c) VO^2+
d) VO2^+

Question 2

What are the colours of the following compounds?
a) V^2+
b) V^3+
c) VO^2+
d) VO2^+

Answer 2

a) purple
b) green
c) blue
d) yellow

Question 3

Why can’t zinc reduce vanadium(II) to elemental vanadium?

Answer 3

E cell is negative so the reaction is not thermodynamically feasible.