2. Calculate the solubility of
Cu(N
3
)
2
in water in grams per litre, where the
K
sp
= 6.3 x 10
-10
.
Which is the correct equilibrium equation?
a)
Cu(N
3
)
2
(s)
Cu
2+
(aq) + 2 N
3
-
(aq)
b)
Cu(N
3
)
2
(s) + 2 H
2
O (l)
Cu(OH)
2
(aq) + 2 H
2
(g) + 2 N
3
-
(aq)
c)
Cu(N
3
)
2
(s)
CuN
3
+
(aq) + N
3
-
(aq)
d)
Cu(N
3
)
2
(s) + H
+
(aq)
CuH
3+
(aq) + 2 N
3
-
(aq)