Question

An active metal reacts with dilute sulphuric acid a. Ammonia
b. Hydrogen chloride
c. Hydrogen d. Nitrogen dioxide
e. Nitric oxide

Answer 1

An active metal reacts with dilute sulphuric acid to evolve hydrogen gas.

Explanation:

• Mineral acids such as hydrochloric acid (HCl), sulphuric acid (H2SO4) will react with few active metals .
• It will evolve hydrogen gas with the formation of their metallic salts.
• When Zinc metal reacts with sulphuric acid it forms zinc sulphate and it will liberate hydrogen gas..
• Here active metal is Zinc and acid is sulphuric acid.
• $Zn +H2SO4 ---- ZnSO4 +H2 gas$

• Metals which are more reactive than hydrogen will displace it from dilute acids and liberate hydrogen gas  For example, Zinc, calcium and magnesium.
• Metals which are less reactive than Hydrogen will not displace it from dilute acids For example, copper ,gold and silver.

• #SPJ3