First slide

Qualitative analysis

Question

When H₂S is passed in Ba(OH)₂ solution:

Moderate

A

Milkyness is produced due to formation of insoluble salt
B

No change is observed because H2S does not reaction with Ba(OH)₂
C

Milkyness is produced due to the formation of BaSO₃
D

No change is observed due to the formation of water soluble salt

Solution

$\begin{aligned} H_{2} S + Ba (OH)_{2} \to BaS + 2 H_{2} O \\ (Water soluble) \end{aligned}$
Once the salt is soluble, the resulting solution is clear and remains soluble.

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