Question

Ca - CaO - Ca(OH)2-H2O - H2SiO3срочно!!!!​

Answer 1

Ответ:

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Объяснение:

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Answer 2

Chemical Reactions Involving Calcium Compounds

Let's break down the chemical reactions involving calcium compounds that you mentioned:

1. Ca + H2O → Ca(OH)2 + H2: - This equation represents the reaction between calcium (Ca) and water (H2O) to form calcium hydroxide (Ca(OH)2) and hydrogen gas (H2) [[6]](https://www.quora.com/In-the-equation-Ca-H2O-CaOH-H2-is-this-reduction-as-calcium-has-gained-hydrogen-from-the-hydroxide-ion). - The balanced equation for this reaction is: Ca + 2H2O → Ca(OH)2 + H2 [[6]](https://www.quora.com/In-the-equation-Ca-H2O-CaOH-H2-is-this-reduction-as-calcium-has-gained-hydrogen-from-the-hydroxide-ion).

2. CaO + H2O → Ca(OH)2: - This equation represents the reaction between calcium oxide (CaO) and water (H2O) to form calcium hydroxide (Ca(OH)2) [[2]](https://www.toppr.com/ask/question/in-the-reactionbeginmatrixcao-h2o-rightarrow-caoh2-heat-energy/). - This reaction is exothermic, meaning it releases heat energy [[2]](https://www.toppr.com/ask/question/in-the-reactionbeginmatrixcao-h2o-rightarrow-caoh2-heat-energy/).

3. Ca(OH)2 + H2O → Ca(OH)2: - This equation seems to be incorrect as it shows calcium hydroxide (Ca(OH)2) reacting with water (H2O) to form calcium hydroxide (Ca(OH)2) again. It is not a valid chemical reaction.

4. H2SiO3: - H2SiO3 represents the chemical formula for silicic acid, which is a weak acid derived from silicon dioxide (SiO2). However, it is not directly related to the previous reactions involving calcium compounds.

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