Between which of the above substances are chemical reactions possible: KOH, Fe, NaCl, HCl, CO2

Between which of the above substances are chemical reactions possible: KOH, Fe, NaCl, HCl, CO2, Cl2, FeCl3, CuO, Zn (OH) 2?

We write down the reaction equations using the listed compounds.
1. The reaction takes place between potassium hydroxide and zinc hydroxide, since zinc hydroxide is an amphoteric compound.
2KOH + Zn (OH) 2 = K2 [Zn (OH) 4].
2. The reaction takes place between potassium hydroxide and carbon monoxide to produce potassium hydrocarbonate.
KOH + CO2 = KHCO3.
3. The reaction takes place between copper oxide and hydrogen chloride to form copper chloride and water.
CuO + 2HCl = CuCl2 + H2O.
4. The reaction takes place between potassium hydroxide and hydrogen chloride to produce potassium chloride and water.
KOH + HCl = KCl + H2O.
5. The reaction takes place between iron chloride and potassium hydroxide to produce potassium chloride and iron hydroxide.
FeCl3 + 3KOH = 3KCl + Fe (OH) 3.
6. The reaction takes place between iron and chlorine to produce ferric chloride.
2Fe + 3Cl2 = 2FeCl3.



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