Question

25. Write the following chemical properties of metals:
i) action of acids
ii) action of bases
iii) Displacement reactions​

Answer 1

Reactions of Acids and Bases with Metals

When a metal reacts with an acid, it generally displaces hydrogen from the acids. This leads to the evolution of hydrogen gas.

... Alkalis (bases that are soluble in water) react with the metal to produce salt and hydrogen gas. For example reaction of zinc with sodium hydroxide.

Displacement reaction

In a displacement reaction, a metal reacts with a salt solution and 'displaces' (or replaces) the metal present in it. ... For example, iron, which is placed higher in the activity series than copper, reacts with copper sulphate solution. Copper, however, does not react with iron sulphate as it is less reactive than iron.

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