What happens whenzinc is put in dilute hydrochloric acid?

Answer 1

Answer:

Metal + Acid --> Salt + Hydrogen

Zinc + Hydrochloric Acid --> Zinc Chloride + Hydrogen

Unbalanced Equation:

Zn + HCL --> ZnCL + H

Balanced Equation:

Zn + 2HCL --> ZnCl2 + H2

The balanced equation is the one you should write for exams.

Explantion:

Zinc has 2 valence electrons (2 in its outer shell), so it more easily loses the two electrons, to form a zinc ion (Zn2+).

Hydrochloric Acid (HCl) has a minus one charge (HCl-).

To balance it, you need 2 HCl's to balance it with zinc's 2+ charge, so you add a "2" before the HCl (see balanced equation).

On the other side of the equation, you have ZnCl2 (because there are now 2 chlorine atoms, and H2 (2 hydrogen atoms).

Hydrogen comes in H2 form (two atoms bonded together), so when a reaction forms hydrogen as a product, you know you need at least two of them on the left side of the equation.

Answer 2

Zn + HCl -----> Zn+ + Cl- + H2

The Zinc solid reacts with the hydrochloric acid to form Zinc Chloride (ZnCl) a soluble salt.

In the reaction solution it appears that the Zinc is disappearing but it is actually becoming part of the solution in the form of ions.

Answer 3

You get zinc chloride and hydrogen.

Answer 4

hydrogen & zink chloride