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Question

In laboratory preparation of Hydrogen, H2S is removed from the obtained gas by passing it through:


  1. Silver nitrate solution

  2. Lead nitrate solution 

  3. Anhydrous Calcium chloride

  4. Caustic potash Solution


Solution

The correct option is B

Lead nitrate solution 


The obtained gas is passed through the Lead Nitrate solution. Which reacts with H2S and forms the precipitate of lead sulphide and HNO3.

   H2S+Pb(NO3)2PbS+HNO3 

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