Відносна молекулярна маса хлоробензену становить​

Объяснение:

1.

1) Si + O₂ (t° = 400-500°C) → SiO₂

2) SiO₂ + 2NaOH → Na₂SiO₃ + H₂O

3) Na₂SiO₃ + 2HCl → H₂SiO₃↓ + 2NaCl

4) H₂SiO₃ (t°) → SiO₂ + H₂O

5) SiO₂ + 2LiOH → Li₂SiO₃ + H₂O

2.

1)  2Na + 2H₂O → 2NaOH + H₂↑

2) 2NaOH + CO₂ → Na₂CO₃ + H₂O

3) Na₂CO₃ + 2HCl → 2NaCl + H₂O + CO₂↑

4) CO₂ + CaO → CaCO₃

5) CaCO₃ (t°) → CaO + CO₂↑

Где необходимо составьте сокращенные ионные уравнения:

1.

2) SiO₂ + 2OH⁻ → SiO₃²⁻ + H₂O

3) SiO₂ + 2H⁺ → SiO₃²⁻ + H₂O

5) SiO₂ + 2OH⁻ → SiO₃²⁻ + H₂O

2.

2) 2OH⁻ + CO₂ → CO₃²⁻ + H₂O

3) CO₃²⁻ + 2H⁺ → H₂O + CO₂↑

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Объяснение: