Question

metals displace hydrogen from dilute acids, whereas non-metals do not, why ? Please someone explain ​

Answer 1

Metals have a tendency to lose electrons and hence they supply electrons i.e. they are electrondonors. That is why metals displace hydrogen from dilute acids. On the other hand non-metal is an electron acceptor. It cannot supply electrons to H+ and hence it does not displace hydrogen from dilute acids.

Hope it will help you....

Answer 2

$\large\underline{\underline\mathrm\red{QUESTION}}$

Metals displace hydrogen from dilute acids, whereas non-metals do not, why ?

$\large\underline{\underline\mathrm\blue{ANSWER}}$

Metals can displace hydrogen gas from acids because metals are electron donor, thus act as reducing agent and thus supply necessary electron to H+ to give hydrogen gas.

On the other hand, non-metals are themselves electron acceptors thus act as oxidizing agent and thus cannot supply necessary electrons to H+ and do not displace hydrogen from acids.

EXPLANATION

Metals are electropositive in nature. Their atoms readily lose electrons to form positive ions. The electrons are accepted by ions of the acid to evolve hydrogen gas. For example, Non-metals are electronegative in nature. This means that their atoms can take up electrons and cannot lose them. Therefore, they do not evolve hydrogen on reacting with dilute acids.