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Chemistry
Chemistry
Problem
Which of the following pairs of cations can be separated by using on adding NaOH solution? a.
Cu
2
+
\text{Cu}^{2+}
Cu
2
+
,
Zn
2
+
\text{Zn}^{2+}
Zn
2
+
b.
Pb
2
+
\text{Pb}^{2+}
Pb
2
+
,
Al
3
+
\text{Al}^{3+}
Al
3
+
c.
Sn
2
+
\text{Sn}^{2+}
Sn
2
+
,
Pb
2
+
\text{Pb}^{2+}
Pb
2
+
d.
Zn
2
+
\text{Zn}^{2+}
Zn
2
+
,
Pb
2
+
\text{Pb}^{2+}
Pb
2
+
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