1.

(a) Al_(2)O_(3) is treated with Co(NO_(3))_(2) (b) Ammonium alum is heated (c) Metastannic acid is heated (d) SnCls is treated with Sn (e) Nitrous oxide (N_(2)O) is treated with sodamide.

Answer»

SOLUTION :(a) ` 2Co(NO_(3))_(2) RARR 2CoO 4NO_(2) +O_(2)`
CoO + `Al_(2)O_(3) rarr CoAl_(2)O_(4)`
(B) ` (NH_(4))SO_(4)Al(SO_(4))_(3) .24H_(2)O rarr (NH_(4))HSO_(4) + Al_(2)(SO_(4))_(3) + 24H_(2)O`
(C) ` H_(2)Sn_(5)O_(4)4H_(2)O rarr 5SnO_(2) + 5H_(2)O`
(d) `SnCl_(4) + Sn rarr 2SnCl_(2)`
` N_(2)O + NaNH_(2) rarr NaN_(3) + NH_(3) + NaOH` sodium azide is formed.


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