Question

Write Chemical Equations for the following:

a) Aluminium oxide reacting with sodium hydroxide.
b) Action of NH4OH on Fe2(SO4)3.
c) Zinc oxide is treated with sodium hydroxide solution

Answer 1

The chemical equations for the reactions you mentioned are:

a) Aluminium oxide reacting with sodium hydroxide

`\boxed{\bold{Al_2O_3 + 2NaOH \longrightarrow 2NaAlO_2 + H_2O}}`

In this reaction, aluminium oxide
`\bold{Al_2O_3)}` reacts with sodium hydroxide (NaOH) to form sodium aluminate
`\bold{(NaAlO_2)}` and water
`\bold{(H2O)}`

b) Action of
`\bold{NH4OH}` on
`\bold{Fe_2(SO_4)_3}`

`\boxed{\bold{Fe_2(SO_4)_3 + 6NH_4OH → 2Fe(OH)_3 + 3(NH_4)_2SO_4}}`

In this reaction, iron (III) sulfate
`(Fe_2(SO_4)_3)` reacts with ammonium hydroxide
`(NH_4OH)` to form iron (III) hydroxide
`(Fe(OH)_3)` and ammonium sulfate
`((NH_4)_2SO_4)`.

c) Zinc oxide is treated with sodium hydroxide solution

`\boxed{\bold{ZnO + 2NaOH → Na_2ZnO_2 + H_2O}}`

In this reaction, zinc oxide (ZnO) reacts with sodium hydroxide (NaOH) to form sodium zincate (Na_2ZnO_2) and water
`\bold{ (H_2O)}`