How does zinc react with concentrated hydrochloric acid?

Answer 1

It could be whatever you want it to be. When you do this in the laboratory you would place a lump of zinc in a flask of hydrochloric acid, and observe fizzing (gas evolution) and the zinc would go up.

#Zn(s) + 2HCl(aq) rarr ZnCl_2(aq) + H_2(g)uarr#

The (s) and (g) stand for #"solid"# and #"gas"#. The (aq) stands for the #"aquated"# ion. For #Zn^(2+)(aq)#, this is probably #[Zn(OH_2)_6]^(2+)#, a zinc ion surrounded by, AQUATED by, 6 water molecules.

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Answer 2

Kai Bowman

The balanced chemical equation is ( Zn + 2HCl \rightarrow ZnCl_2 + H_2 ) for zinc chloride and hydrogen gas produced by zinc's reaction with concentrated hydrochloric acid.

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Answer from HIX Tutor

When evaluating a one-sided limit, you need to be careful when a quantity is approaching zero since its sign is different depending on which way it is approaching zero from. Let us look at some examples.