1.

Write the reactions given below (a) Al(NO_(3))_(3) is heated (b) Al_(2)O_(3) is heated with carbon in presence of dry Cla_(2)(c) Sn is treated with hot and conc. HNO_(3)(d) Sn is treated with alkali (e) PbO is treated with NaOH (0 PbO is treated with NaCl (g) Fe is treated with (Cold, dilute), (hot, concentrated), concentrated HNO_(3), (sp.gr > 1.12) (h) Ferrous oxalate is heated (i) Ferrous sulphate is ignited 0. (j) Cuprous oxide is treated with ferric sulphate. "

Answer»

SOLUTION :(a) ` 4Al(NO_(3))_(3) rarr 2AlCl_(3) + CO`
(b) `Al_(2)O_(3) + C + Cl_(2) rarr AlCl_(3) + CO`
(c) `5Sn + 20HNO_(3) rarr H_(2)Sn_(5)O_(11).4H_(2)O + 20NO_(2) + 5H_(2)O`
(d) ` Sn + 2NaOH + H_(2)O rarr Na_(2)SO_(4) + 2H_(2) `
(e ) `PbO + 2NaOH rarr Na_(2)PbO_(2) + H_(2)O `
(f) `2PbO + NaCl rarr Pb_(2)O_(3) + NaCl`
(g) ` 4Fe + 10HNO_(3) rarr 4Fe(NO_(3))_(2) + NH_(4)NO_(3) + 3H_(2)O `
` 4Fe + 10HNO_(3) rarr 4Fe(NO_(3))_(2) + N_(2)O + 5H_(2)O `
`Fe + 4HNO_(3)rarr Fe(NO_(3))_(2) + NO + 2H_(2)O`
(h) `FeC_(2)O_(4) rarr FeO + CO + CO_(2)`
(i) ` 2FeSO_(4) rarr Fe_(2)O_(3) + SO_(2) + S)_(3) `
` Cu_(2)O + Fe(SO_(4))_(3) + H_(2)SO_(4) rarr 2CuSO_(4) + 2FeSO_(4) + H_(2)O`


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