1.

M("Salt")+"Dil. "HCl overset(Warm)to Pdarr+N uarr gas 'N' changes colour of FeSO_(4) solution into yellow solution then salt M in above reaction is

Answer»

`BaS_(2)O_(3)`
`Ag_(2)SO_(3)`
`AgNO_(2)`
`Pb(NO_(3))_(2)`

Solution :`BaS_(2)O_(3)+HCl overset(warm) toBaCl_(2)+SO_(2)uarr overset(FeSO_(4)sol)to`No reaction hence solution remains green.
`Ag_(2)SO_(3)+HCl overset(warm)toAgCl darr+SO_(2)uarr overset(FeSO_(4)sol.)to`No reaction hence solution remains green.
`AgNO_(2)+HCl overset(warm) to AGCL darr+NO_(2) uarr underset(air)overset(FeSO_(4)sol.)Fe^(3+)(aq.)` (yellow sol.)
`impliesPb(NO_(3))_(2)` salt is not DECOMPOSE by done HCl acid.


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