Question

ZnCl 2 + 2NaOH → Zn(OH) 2 + 2NaCl напишите полное и сокращенное ионное уравнение.1) ZnCl2 NaOH=ZnOH2 NaCl2) ZnOH2 H2SO4=ZnSO4 H2O3)H2ZnO2 NaOH=NaZnO2 H2O

Answer 1

Complete Ionic Equation:

ZnCl2(aq) + 2NaOH(aq) → Zn(OH)2(s) + 2NaCl(aq)

Net Ionic Equation:

Zn2+(aq) + 2OH-(aq) → Zn(OH)2(s)

Explanation:

The given chemical equation represents a reaction between zinc chloride (ZnCl2) and sodium hydroxide (NaOH). The reaction produces zinc hydroxide (Zn(OH)2) and sodium chloride (NaCl).

To write the complete ionic equation, we need to break down all the reactants and products into their respective ions. In this case, zinc chloride dissociates into zinc ions (Zn2+) and chloride ions (Cl-), while sodium hydroxide dissociates into sodium ions (Na+) and hydroxide ions (OH-). The solid zinc hydroxide does not dissociate.

The complete ionic equation is: Zn2+(aq) + 2Cl-(aq) + 2Na+(aq) + 2OH-(aq) → Zn(OH)2(s) + 2Na+(aq) + 2Cl-(aq)

To simplify the equation and remove the spectator ions (ions that appear on both sides of the equation and do not participate in the reaction), we can write the net ionic equation. In this case, the sodium ions (Na+) and chloride ions (Cl-) are spectator ions.

The net ionic equation is: Zn2+(aq) + 2OH-(aq) → Zn(OH)2(s)

This equation represents the essential chemical changes that occur during the reaction, focusing only on the species that are directly involved.

Please note that the third equation you provided (H2ZnO2 + NaOH = NaZnO2 + H2O) does not represent a balanced chemical equation. If you need assistance with balancing chemical equations, please let me know.