Question

Складіть рівняння реакцій, що відповідають такій схемі перетворень: H,0, -> 0, -> CaO - Ca(OH)

Answer 1

2H2O2 (MnO2)--> 2H2O + O2

2Ca + O2 --> 2CaO

CaO + H2O --> Ca(OH)2

Answer 2

Equations for the Given Transformation Scheme

The given transformation scheme involves the conversion of water (H2O) into calcium oxide (CaO) and calcium hydroxide (Ca(OH)2). To write the balanced chemical equations for these reactions, we need to consider the conservation of mass and charge.

1. Conversion of Water (H2O) to Hydrogen Gas (H2): The first step in the transformation scheme is the decomposition of water into hydrogen gas. This reaction can be represented by the following balanced equation:

2H2O(l) -> 2H2(g) + O2(g)

This equation shows that two molecules of water decompose to form two molecules of hydrogen gas and one molecule of oxygen gas.

2. Conversion of Hydrogen Gas (H2) to Calcium Oxide (CaO): The second step involves the reaction of hydrogen gas with calcium oxide to produce water and calcium hydroxide. The balanced equation for this reaction is:

H2(g) + CaO(s) -> Ca(OH)2(s)

This equation shows that one molecule of hydrogen gas reacts with one molecule of calcium oxide to produce one molecule of calcium hydroxide.

Therefore, the overall transformation scheme can be represented by the following set of balanced equations:

2H2O(l) -> 2H2(g) + O2(g) H2(g) + CaO(s) -> Ca(OH)2(s)

Please note that these equations are balanced and represent the stoichiometry of the reactions.