The pair(s) of ions where BOTH the ions are precipitated upon passing $\mathrm{H}_2 \mathrm{~S}$ gas in presence of dilute HCl , is(are)
Select ALL correct options:
A
$\mathrm{Ba}^{2+}, \mathrm{Zn}^{2+}$
B
$\mathrm{Bi}^{3+}, \mathrm{Fe}^{3+}$
C
$\mathrm{Cu}^{2+}, \mathrm{Pb}^{2+}$
D
$\mathrm{Hg}^{2+}, \mathrm{Bi}^{3+}$
✓ Correct! Well done.
✗ Incorrect. Try again or view the solution.
⚠ Partially correct. Some answers are missing.
Solution
Precipitate is formed on passing $\mathrm{H}_2 \mathrm{~S}$ in acidic medium i.e. ion must be of group II. $\mathrm{Cu}^{2+}, \mathrm{Pb}^{2+}, \mathrm{Hg}^{2+}, \mathrm{Bi}^{3+}$
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