Question

Reaction of metal with dilute acid hydrochloric acid

Answer 1

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Metals form respective salts when react with dilute acid.

Metal + dil. acid ⇨ Metal salt + Hydrogen

Reaction of sodium metal with dilute acid: Sodium metal gives sodium chloride and hydrogen gas when react with dilute hydrochloric acid.

2Na + 2HCl ⇨ 2NaCl + H2

Reaction of potassium with dilute sulphuric acid: Potassium sulphate and hydrogen gas are formed when potassium reacts with dilute sulphuric acid.

2K + H2SO4 ⇨ K2SO4 + H2

Reaction of magnesium metal with dilute hydrochloric acid: Magnesium chloride and hydrogen gas are formed when magnesium reacts with dilute hydrochloric acid.

Mg + 2HCl ⇨ MgCl2 + H2

Reaction of aluminium with dilute hydrochloric acid: Aluminium chloride and hydrogen gas are formed.

2Al + 6HCl ⇨ 2AlCl3 + 3H2

Reaction of zinc with dilute sulphuric acid: Zinc sulphate and hydrogen gas are formed when zinc reacts with dilute sulphuric acid. This method is used in laboratory to produce hydrogen gas.

Zn + H2SO4 ⇨ ZnSO4 + H2

CopperCopper, gold and silver are known as noble metals. These do not react with water or dilute acids.

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Answer 2

2Na+2HCl=======>2NaCl+HCl