1.

How many of the following will volatilize on heating leaving no solid residue ? (i) NaNO_(3) "" (ii) NH_(4)NO_(3) "" (iii)Ca(H_(2)PO_(2)) "" (iv) NH_(4)HCO_(3) (v)N_(2)H_(5)HSO_(3) "" (vi)AlCl_(3) "" (vii) [Cu(NH_(3))_(4)]SO_(4) "" (viii) FeSO_(4), 7H_(2)O

Answer»


Solution :`NH_(4)NO_(3) OVERSET(Delta)to N_(2)O uarr + 2H_(2)O uarr`
`NH_(4)HCO_(3) UNDERSET(Delta)to NH_(3) uarr +H_(2)O uarr+CO_(2)uarr`
`N_(2)H_(5)HSO_(3) underset(Delta)to N_(2)H_(4) uarr + H_(2)O uarr+SO_(2) uarr`
`AlCl_(3) underset(Delta)to AlCl_(3)(g)`(sublimes)


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