Zn->ZnCl2->Zn(OH)2->ZnO->ZnSO4 | K2ZnO2

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The reaction sequence begins with elemental zinc (Zn), which can react with hydrochloric acid (HCl) to form zinc chloride (ZnCl2). Zinc chloride can then react with sodium hydroxide (NaOH) to form zinc hydroxide (Zn(OH)2). Zinc hydroxide can further react with oxygen (O2) to form zinc oxide (ZnO). Finally, zinc oxide can react with sulfuric acid (H2SO4) to form zinc sulfate (ZnSO4).

Additionally, if zinc oxide reacts with potassium hydroxide (KOH), it will form potassium zincate, K2ZnO2.

The complete reaction sequence is as follows:
Zn + HCl -> ZnCl2
ZnCl2 + NaOH -> Zn(OH)2
Zn(OH)2 + O2 -> ZnO
ZnO + H2SO4 -> ZnSO4
ZnO + 2KOH -> K2ZnO2

Overall, these reactions show the different chemical reactions that zinc can undergo with various substances to form different zinc compounds.