Question

Name two metals which can displace hydrogen from dilute hydrochloric acid?​

Answer 1

ANSWER: SODIUM AND POTASSIUM

EXPLANATION:

Metals that are more reactive than hydrogen have the ability to displace it from dilute acids. For example, calcium and magnesium. Metals that are less reactive than Hydrogen do not have the ability to substitute it—for example, copper and silver.

A displacement reaction is a reaction in which the atom or a set of atoms is displaced by another atom in a molecule. you can understand it by the equations given below:

A + B-C → A-C + B.

The above equation is possible only when A is more reactive than B.

Similarly, when sodium or potassium reacts with dilute hydrochloric acid, they displace the chlorine

2Na+2HCl→2NaCl+H2.