Question

si->SIO2->K2SIO3->H2SiO3->SiO2->Si

Answer 1

Привет! Всё просто!

1) Si + O2 = SiO2;

2) SiO2 + 2KOH = K2SiO3 + H2O;

3) K2SiO3 + 2HNO3 = 2KNO3 + H2SiO3;

4) H2SiO3 ---> SiO2 + H2O;

5) SiO2 + 2C = Si + 2CO. Абсолютно уверен в своём решении! 

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The end?

Answer 2

Chemical Reactions in the Conversion of Si to SiO2

The conversion of silicon (Si) to silicon dioxide (SiO2) involves several chemical reactions. Let's break down the process step by step:

1. Si to SiO2: The first step is the conversion of silicon (Si) to silicon dioxide (SiO2). This reaction can be represented as:

   Si + O2 → SiO2
   

This reaction occurs when silicon reacts with oxygen gas to form silicon dioxide.

: Si SiO2 Mg2Si SiH4 SiO2 Na2SiO3 H2SiO3. 285.

2. SiO2 to K2SiO3: The next step involves the reaction of silicon dioxide (SiO2) with potassium hydroxide (KOH) to form potassium silicate (K2SiO3). The reaction can be represented as:

   SiO2 + 2KOH + H2O → K2SiO3 + 2H2
   

In this reaction, silicon dioxide reacts with potassium hydroxide and water to produce potassium silicate and hydrogen gas.

[[1]](https://library.pguas.ru/xmlui/bitstream/handle/123456789/312/%D0%9F%D1%80%D0%BE%D0%B3%D1%80%D0%B0%D0%BC%D0%BC%D0%B0%20%D0%BA%D1%83%D1%80%D1%81%D0%B0_%D0%A5%D0%B8%D0%BC%D0%B8%D1%8F_%20_%D0%B7%D0%B0%D0%BE%D1%87%D0%BD%D0%B8%D0%BA%D0%B8%20%D0%B8%20%D1%8D%D0%BA%D1%81%D1%82%D0%B5%D1%80%D0%BD%D0%B0%D1%82_.pdf?sequence=1&isAllowed=y): Si + 2KOH + H2O = K2SiO3 + 2H2.

3. K2SiO3 to H2SiO3: The third step involves the conversion of potassium silicate (K2SiO3) to orthosilicic acid (H2SiO3). The reaction can be represented as:

   K2SiO3 + 2HCl → H2SiO3 + 2KCl
   

In this reaction, potassium silicate reacts with hydrochloric acid to produce orthosilicic acid and potassium chloride.

: Sep 29, 2013 ... , : 1) :LiOH,CuSO4,HNO3,Cu(NO3)2...

4. H2SiO3 to SiO2: The next step involves the dehydration of orthosilicic acid (H2SiO3) to form silicon dioxide (SiO2). The reaction can be represented as:

   H2SiO3 → SiO2 + H2O
   

In this reaction, orthosilicic acid undergoes dehydration to produce silicon dioxide and water.

: Dec 1, 2022 ... H2SiO3, HNO2, H3PO4, H2SO3, H2S, HF, HCN, CH3COOH ;.

5. SiO2 to Si: The final step involves the reduction of silicon dioxide (SiO2) to elemental silicon (Si). This reaction can be achieved through various methods, such as the reduction of SiO2 with carbon or the reaction of SiO2 with hydrogen gas.

The reduction of SiO2 with carbon can be represented as:

   SiO2 + 2C → Si + 2CO
   

In this reaction, silicon dioxide reacts with carbon to produce elemental silicon and carbon monoxide.

: ( SiO2) . SO3 + H2O = H2SO4. P2O5 + 3 H2O = 2 ... H2CO3, H2SiO3, HNO2, H3PO4, H2SO3, H2S, HF, HCN,. CH3COOH ...

The reduction of SiO2 with hydrogen gas can be represented as:

   SiO2 + 2H2 → Si + 2H2O
   

In this reaction, silicon dioxide reacts with hydrogen gas to produce elemental silicon and water.

: Apr 30, 2021 ... Si-1 i (.. ) ... Na2SiO3 + 2 + 2 = H2SiO3 + Na23; H2SiO3 = SiO2 + 2. 2-...

So, the overall process of converting Si to SiO2 involves a series of chemical reactions: Si → SiO2 → K2SiO3 → H2SiO3 → SiO2 → Si.

Please let me know if you have any further questions!