1.

You are provided with the following chemicals: NaOH, Na2CO3, H2O, Zn(OH)2, CO2, HCI, Fe, H2SO4, CI2, Zn. Using the suitable chemicals from the given list only, state briefly how you would prepare:(a) iron (III) chloride,(b) sodium sulphate,(c) sodium zincate(d) iron (II) sulphate,(e) sodium chloride?

Answer»

(a) Iron (III) Chloride: Iron chloride is formed by direct combination of elements. 

2Fe + 3Cl2 ⟶ 2FeCI

(b) Sodium sulphate: By neutralization of caustic soda with dilute sulphuric acid 

2NaOH + H2SO4 ⟶ Na2SO4 + 2H2

(c) Sodium zincate: By the action of metals with alkalis 

Zn + 2NaOH ⟶ Na2ZnO2 + H

(d) Iron (II) sulphate: Iron sulphate is prepared by the action of dilute acid on an active metal. 

Fe + H2SO4 ⟶ FeSO4 + H

(e) Sodium chloride: By the neutralization reaction of strong acid with strong base

 NaOH + HCI ⟶ NaCI + H2O



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