Question

15. Which of the following metals reacts with concentrated sulphuric acid but does not react with ferrous sulphate?
(a) Zn
(b) Mg
(c) K
(d) Pb​

Answer 1

Answer:

mg metal

Explanation:

as Fe is more reactive then mg

Answer 2

The metal that reacts with concentrated sulphuric acid but does not react ferrous sulphate is potassium (K).

Explanation:

• Potassium reacts with sulphuric acid to give potassium sulphate and hydrogen gas.
• The reaction can be given as: $\[2K + {H_2}S{O_4} \to {K_2}S{O_4} + {H_2}\]$

• It does not react with ferrous suphate.
• Both zinc and magnesium react with ferrous sulphate to form zinc sulphate and magnesium sulphate respectively as they are more reactive than iron.
• Lead neither reacts with sulphuric acid nor ferrous sulphate.