Question

Zn+hcl= Cu+hcl= Mg+h2so4= Au+h2so4= Na2so4+hcl= Nacl+hcl= Cuo+h2so4= H3po4+h2so4= H2co3+NaOh= Cuo+li2o= Li2o+co2= Naoh+hcl=

Answer 1

Zn + 2HCl -> ZnCl2 + H2
Cu + 2HCl -> CuCl2 + H2
Mg + H2SO4 -> MgSO4 + H2
Au + H2SO4 (реакция с разбавленной не идёт, с концентрированной холодной не идёт)
Na2SO4 + HCl -> реакция не идёт
CuO + H2SO4 -> CuSO4 + H2O
H3PO4 + H2SO4 -> не идёт
H2CO3 + 2NaOH -> Na2CO3 + CO2 + H2O
CuO + Li2O -> не идёт
Li2O + CO2 -> Li2CO3
NaOH + HCl -> NaCL + H2O

Answer 2

It looks like you've provided a list of chemical reactions and equations. However, it seems some of them might be incomplete or not entirely accurate. I'll do my best to help you understand and balance these reactions correctly:

1. Zn + HCl → ZnCl2 + H2 (Zinc reacts with hydrochloric acid to produce zinc chloride and hydrogen gas.)

2. Cu + HCl → No Reaction (Copper does not readily react with hydrochloric acid under normal conditions.)

3. Mg + H2SO4 → MgSO4 + H2 (Magnesium reacts with sulfuric acid to produce magnesium sulfate and hydrogen gas.)

4. Au + H2SO4 → No Reaction (Gold does not react with sulfuric acid under normal conditions.)

5. Na2SO4 + 2HCl → 2NaCl + H2SO4 (Sodium sulfate reacts with hydrochloric acid to produce sodium chloride and sulfuric acid.)

6. NaCl + HCl → No Reaction (Sodium chloride does not react with hydrochloric acid; both are already compounds.)

7. CuO + H2SO4 → CuSO4 + H2O (Copper(II) oxide reacts with sulfuric acid to produce copper(II) sulfate and water.)

8. H3PO4 + H2SO4 → No Reaction (Phosphoric acid does not readily react with sulfuric acid under normal conditions.)

9. H2CO3 + 2NaOH → Na2CO3 + 2H2O (Carbonic acid reacts with sodium hydroxide to produce sodium carbonate and water.)

10. CuO + Li2O → No Reaction (Copper(II) oxide does not react with lithium oxide under normal conditions.)

11. Li2O + CO2 → Li2CO3 (Lithium oxide reacts with carbon dioxide to produce lithium carbonate.)

12. NaOH + HCl → NaCl + H2O (Sodium hydroxide reacts with hydrochloric acid to produce sodium chloride and water.)

Please make sure to double-check the reactions and their balances. Additionally, if you have any specific questions about these reactions or related chemistry concepts, feel free to ask!