Question

1)С какими из веществ реагирует железо? 1)H2SO4 2)CO2 3)NA2O 4)O2

Answer 1

1.H2SO4+ZnO=ZnSO4+H2O
Cu(OH)2+H2SO4=CuSO4+2H2O
2.K2O+CO2=K2CO3
Ca(OH)2+CO2=CaCO3+H2O
3.Na2O+H2O=2NAOH
4.H2+O2=2H2O

Answer 2

 1)H2SO4  4)O2..................................

Answer 3

Reactivity of Iron with Substances

Iron can react with several substances. Here are the reactions with the given substances:

1. H2SO4 (Sulfuric Acid): Iron reacts with sulfuric acid to produce iron sulfate, water, and sulfur dioxide gas. 2. CO2 (Carbon Dioxide): Iron does not react with carbon dioxide at room temperature or under normal conditions. 3. NA2O (Sodium Oxide): Iron does not have a significant reaction with sodium oxide under normal conditions. 4. O2 (Oxygen): Iron reacts with oxygen to form iron oxide, commonly known as rust.

Based on the provided information, iron reacts with H2SO4 (sulfuric acid) and O2 (oxygen).

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