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  • Out of the given options, which gas, if present in the atmosphere, have the capability to darken a surface coated by white lead. <img alt="\mathrm{ \mathrm{SO}_2, \mathrm{SO}_3, \mathrm{H

Out of the given options, which gas, if present in the atmosphere, have the capability to darken a surface coated by white lead.

\mathrm{ \mathrm{SO}_2, \mathrm{SO}_3, \mathrm{H}_2 \mathrm{~S}, \mathrm{~N}_2, \mathrm{O}_2, \mathrm{CO}_2 \text {, HCl } }

 

Option: 1

\mathrm{SO}_3, \mathrm{HCl}

 


Option: 2

\mathrm{SO}_2, \mathrm{H}_2 \mathrm{S}
 


Option: 3

\mathrm{H}_2 \mathrm{S}
 


Option: 4

\mathrm{SO}_2, \mathrm{SO}_3 ; \mathrm{H}_2 \mathrm{S}


Answers (1)

best_answer

\mathrm{\mathrm{H}_2 \mathrm{S}+\mathrm{Pb}\left(\mathrm{NO}_3\right)_2 \rightarrow \underset{\text { Black }}{\mathrm{PbS}}+2 \mathrm{HNO}_3}

Hence option 3 is correct.

Posted by

Divya Prakash Singh

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