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Chemistry
Chemistry
Problem
An inorganic salt is strongly heated. The residue is yellow when hot and white when cold. The salt contains: a.
P
b
2
+
Pb^{2+}
P
b
2
+
b.
Z
n
2
+
Zn^{2+}
Z
n
2
+
c.
H
g
2
+
Hg^{2+}
H
g
2
+
d.
N
H
4
+
NH_4^+
N
H
4
+
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