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Number of salts among the following that...

Number of salts among the following that will give metal on heating
`Zn(NO_(3))_(2),AgNO_(3),Cu(NO_(3))_(2),Hg(NO_(3))_(2)`

Text Solution

Verified by Experts

The correct Answer is:
2
`AgNO_(3)overset(Delta)(rarr)Ag+NO_(2)+(1)/(2)O_(2)`
`Hg(NO_(3))_(2)overset(Delta)(rarr)Hg+2NO_(2)+O_(2)`
`(i)underset((A))(Pb(NO_(3))_(2))+2NaClrarrunderset((B))(PbCl_(2))+1NaNO_(3)`
`(ii) PbCl_(2)+H_(2)S underset((C ))(PbS)+2HCl
`(iii) underset((B))(PbCl_(2))+2Nal rarr underset((D))(PbI_(2))+2NaCl`
`(iv) Pb(NO_(3))_(2) rarr PbO+2NO_(2)+(1)/(2)O_(2)`
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Number of salts among the following that will give metal on heating is: Zn(NO_(3))_(2),AgNO_(3),Cu(NO_(3))_(2),Hg(NO_(3))_(2),pb(NO_(3))2

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