Question

С какими из перечисленных веществ будет реагировать HCl: магний, медь, гидроксид натрия, оксид железа?

Answer 1

Mg+2 HCl= MgCl2 +H2! металл стоит до водорода

NaOH + HCl = Na Cl + H2O нейтрализация

FeO +2 HCl = Fe Cl2 + H2O

Answer 2

Reactivity of HCl with Listed Substances

HCl, or hydrochloric acid, will react differently with the listed substances:

1. Magnesium: HCl will react with magnesium to produce magnesium chloride and hydrogen gas. - Magnesium + Hydrochloric acid → Magnesium chloride + Hydrogen gas.

2. Copper: HCl will not react with copper under normal conditions. - No reaction between copper and hydrochloric acid.

3. Sodium hydroxide (NaOH): HCl will react with sodium hydroxide to form water and sodium chloride. - Hydrochloric acid + Sodium hydroxide → Water + Sodium chloride.

4. Iron oxide (Fe2O3): HCl will react with iron oxide to form iron(III) chloride and water. - Iron(III) oxide + Hydrochloric acid → Iron(III) chloride + Water.

Conclusion

HCl will react with magnesium, sodium hydroxide, and iron oxide, but not with copper.