Question

_CO2 + _Ca(OH)² _KOH + _H²SO⁴ _CaO + _NaOH Поможіть будь ласка підставити елемент на місце _

Answer 1

CO2 + Ca(OH) 2 = CaCO3 + H2
2KOH+ H2SO4 = K2SO4 + 2H2O
CaO + 2NaOH = Ca(OH) 2 + Na2O

Answer 2

Chemical Reactions

Let's break down the chemical reactions and determine the elements that need to be substituted:

1. CO2: Carbon dioxide 2. Ca(OH)2: Calcium hydroxide 3. KOH: Potassium hydroxide 4. H2SO4: Sulfuric acid 5. CaO: Calcium oxide 6. NaOH: Sodium hydroxide

To determine the elements that need to be substituted, we need to understand the chemical reactions involved. Could you please provide more context or specify the reaction in which you need help substituting an element?