Question

write a balanced chemical equation for the reaction of zinc metal with dilute hydrochlorlic acid and sodium hydroxide

Answer 1

Zn + HCl = ZnCl2 + H2

Na2(ZnOH)2

Answer 2

$Zn(s) + 2HCl(aq) \rightarrow ZnCl_2(aq) + H_2(g)$

$Zn(s) + 2NaOH(aq) \rightarrow Na_2ZnO_2(aq) + H_2(g)$

Explanation:

• When zinc metal reacts with hydrochloric acid(HCl), formation of the zinc chloride takes place, along with bubbles of dihydrogen gas, according to the following chemical eqaution:

$Zn(s) + 2HCl(aq) \rightarrow ZnCl_2(aq) + H_2(g)$

• On the reaction of zinc metal with sodium hydroxide (NaOH), sodium zincate is formed and hydrogen gas is evolved here also.

$Zn(s) + 2NaOH(aq) \rightarrow Na_2ZnO_2(aq) + H_2(g)$