Answered

Which of the following metals yields the greatest amount of H2 per gram of metal reacting with HCl(aq)?
- Cu
- Na
- K
-Ca
(Without performing detailed calculations)



Answer :

adioabiola

The metal which yields the greatest amount of H2 per gram of metal reacting with HCl(aq) among the choices given above is Ca ( Calcium)

The correct answer choice from the above is option d.

This goes to say that among all the metals given above, it is calcium that will yields the greatest amount of H2 per gram of metal reacting with HCl(aq).

The balanced equation for the reaction between calcium and hydrochloric acid is given below:

Ca(s) + 2HCl(aq) → CaCl2(aq) + H2(g)

What is meant by metals?

Metals are the electropositive elements of the periodic table with different periodic properties.

Metals are characteristized by the following properties:

  • They have a very high melting point
  • They have high boiling point
  • Metals also conduct electricity in molten form.

Metallic elements also show some periodicities in the periodic table. Some of these periodic properties are:

  • Melting and boiling point
  • Ionization energy
  • Electron affinity
  • Electrical and thermal conductivity
  • Atomic size and radius
  • Ionic size and radius

So therefore, the metal which yields the greatest amount of H2 per gram of metal reacting with HCl(aq) among the choices given above is Ca ( Calcium)

The correct answer choice from the above is option d.

Read more about metals:

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