Question

Si-->SiO2-->CaSiO3-->H2SiO3-->SiO2-->Na2SiO3

Answer 1

Ответ:

Объяснение:

Si + O2 = SiO2

SiO2 + CaO = CaSiO3

CaSiO3 + 2HCl = CaCl2 + H2SiO3↓

H2SiO3 -> SiO2 + H2O

SiO2 + 2NaOH = Na2SiO3 + H2O

Answer 2

It looks like you've provided a sequence of chemical reactions involving silicon (Si) and various compounds. Let me break down the reactions step by step:

1. Si → SiO2: Silicon (Si) reacts with oxygen (O2) to form silicon dioxide (SiO2), also known as silica.

2. SiO2 → CaSiO3: Silicon dioxide (SiO2) reacts with calcium (Ca) to form calcium silicate (CaSiO3). This is often referred to as a silicate mineral.

3. CaSiO3 → H2SiO3: Calcium silicate (CaSiO3) reacts with water (H2O) to form orthosilicic acid (H2SiO3), which is a soluble form of silicon in water.

4. H2SiO3 → SiO2: Orthosilicic acid (H2SiO3) can polymerize to form silicon dioxide (SiO2) or silica.

5. SiO2 → Na2SiO3: Silicon dioxide (SiO2) can react with sodium hydroxide (NaOH) to form sodium silicate (Na2SiO3), a common glass-forming compound.

These reactions represent different chemical transformations of silicon, involving its combination with oxygen and other elements to form various silicon-containing compounds. Each step in the sequence represents a distinct chemical reaction or transformation.