Question

reaction for zinc and aques sodium hrdroxisde

Answer 1

The reaction between zinc and aqueous sodium hydroxide produces sodium tetrahydroxozincate(II) ($Na_2[Zn(OH)_4]$) and hydrogen gas ($H_2$).

Answer 2

The reaction between zinc metal and aqueous sodium hydroxide is a characteristic reaction of an amphoteric metal with a strong base. Zinc reacts with aqueous sodium hydroxide to form sodium tetrahydroxozincate(II) and hydrogen gas.

Zinc (Zn) is an amphoteric metal, meaning it can react with both acids and strong bases. When zinc reacts with aqueous sodium hydroxide (NaOH), it forms a soluble complex salt called sodium tetrahydroxozincate(II) and liberates hydrogen gas. The water present in the aqueous solution participates in the formation of the tetrahydroxo complex.

The balanced chemical equation for the reaction is:

$Zn(s) + 2NaOH(aq) + 2H_2O(l) \longrightarrow Na_2[Zn(OH)_4](aq) + H_2(g)$