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glotc
@glotc
July 2022
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ПОМОГИТЕ СРОЧНО!!!!
ЗАДАНИЕ В ПРИЛОЖЕНИИ
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13iul
10. S → SO₂ → SO₃→H₂SO₄ →K₂SO₄ → BaSO₄
1) S + O₂ → SO₂
S⁰ + 2O⁰ = SO₂
2) 2
SO₂ + O₂ → 2SO₃
2SO₂ + 2O⁰ = 2SO₃
3) SO₃ + H₂O →H
₂SO₄
SO
₃ + H₂O = 2H⁺ + SO²⁻₄
4)
H₂SO₄ + 2KOH →K₂SO₄ + 2 H₂O
2H⁺ + SO²⁻₄ + 2K⁺ + 2OH⁻ = 2K⁺ + SO²⁻₄ + 2H₂O
2H⁺ + 2OH⁻ = 2H₂O
5) K₂SO₄ + BaCO₃ → BaSO₄↓ + K₂CO₃
2K⁺ + SO²⁻₄ + Ba²⁺ + CO²⁻₃ = BaSO₄ + 2K⁺ + CO²⁻₃
SO²⁻₄ + Ba²⁺
= BaSO₄
11. Cu(NO
₃)₂ → CuOHNO₃ → Cu(OH)₂ → CuO → CuSO₄
1) Cu(NO₃)₂ + H₂O → CuOHNO₃↓ + HNO₃
Cu²⁺ + 2NO⁻₃ + H₂O = CuOHNO₃↓ + H⁺ + NO⁻₃
2) CuOHNO₃ + NaOH → Cu(OH)₂ + NaNO₃
Cu²⁺ + OH⁻ + NO⁻₃ + Na⁺ + OH⁻ = Cu(OH)₂ + Na⁺ + NO⁻
₃
Cu²⁺ + OH⁻ + OH⁻ = Cu(OH)₂
3) Cu(OH)₂ → CuO + H₂O
Cu²⁺ + 2OH⁻ = CuO + H₂O
4) CuO + H₂SO₄ → CuSO₄ + H₂O
CuO + 2H⁺ + SO²⁻₄ = Cu²⁺ + SO²⁻₄ + H₂O
CuO
+ 2H⁺ = Cu²⁺ + H₂O
12. P → P₂O₅ → H₃PO₄ → NaH₂PO₄ → Na₂HPO₄ → Na₃PO₄
1) 2P + N₂O₅ = P₂O₅ + N₂
2P⁰ + N₂O₅ = P₂O₅ + N₂⁰
2) P₂O₅ + 3H₂O → 2H
₃PO₄
P₂O₅ + 3H₂O → 6H⁺ + 2PO³⁻₄
3)
H
₃PO₄ + NaOH → NaH₂PO₄ + H₂O
3H⁺ + PO³⁻₄ + Na⁺ + OH⁻ → Na⁺ + 2H⁺ + PO³⁻₄ + H
₂O
3H⁺ + OH⁻ → 2H⁺ + H₂O
4)
NaH₂PO₄
+ NaOH
→ Na₂HPO₄ + H₂O
Na⁺ + 2H⁺ + PO³⁻₄ + Na⁺ + OH⁻→ 2Na⁺ + H⁺ + PO³⁻₄ + H₂O
2H⁺ + OH⁻→ H⁺ + H₂O
5)
Na₂HPO₄
+ NaOH
→ Na₃PO₄ + H₂O
2Na⁺ + H⁺ + PO³⁻₄ + Na⁺ + OH⁻ = 3Na ⁺ + PO³⁻₄ + H₂
O
H⁺ + OH⁻ = H₂
O
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Answers & Comments
1) S + O₂ → SO₂
S⁰ + 2O⁰ = SO₂
2) 2SO₂ + O₂ → 2SO₃
2SO₂ + 2O⁰ = 2SO₃
3) SO₃ + H₂O →H₂SO₄
SO₃ + H₂O = 2H⁺ + SO²⁻₄
4) H₂SO₄ + 2KOH →K₂SO₄ + 2 H₂O
2H⁺ + SO²⁻₄ + 2K⁺ + 2OH⁻ = 2K⁺ + SO²⁻₄ + 2H₂O
2H⁺ + 2OH⁻ = 2H₂O
5) K₂SO₄ + BaCO₃ → BaSO₄↓ + K₂CO₃
2K⁺ + SO²⁻₄ + Ba²⁺ + CO²⁻₃ = BaSO₄ + 2K⁺ + CO²⁻₃
SO²⁻₄ + Ba²⁺ = BaSO₄
11. Cu(NO₃)₂ → CuOHNO₃ → Cu(OH)₂ → CuO → CuSO₄
1) Cu(NO₃)₂ + H₂O → CuOHNO₃↓ + HNO₃
Cu²⁺ + 2NO⁻₃ + H₂O = CuOHNO₃↓ + H⁺ + NO⁻₃
2) CuOHNO₃ + NaOH → Cu(OH)₂ + NaNO₃
Cu²⁺ + OH⁻ + NO⁻₃ + Na⁺ + OH⁻ = Cu(OH)₂ + Na⁺ + NO⁻₃
Cu²⁺ + OH⁻ + OH⁻ = Cu(OH)₂
3) Cu(OH)₂ → CuO + H₂O
Cu²⁺ + 2OH⁻ = CuO + H₂O
4) CuO + H₂SO₄ → CuSO₄ + H₂O
CuO + 2H⁺ + SO²⁻₄ = Cu²⁺ + SO²⁻₄ + H₂O
CuO + 2H⁺ = Cu²⁺ + H₂O
12. P → P₂O₅ → H₃PO₄ → NaH₂PO₄ → Na₂HPO₄ → Na₃PO₄
1) 2P + N₂O₅ = P₂O₅ + N₂
2P⁰ + N₂O₅ = P₂O₅ + N₂⁰
2) P₂O₅ + 3H₂O → 2H₃PO₄
P₂O₅ + 3H₂O → 6H⁺ + 2PO³⁻₄
3) H₃PO₄ + NaOH → NaH₂PO₄ + H₂O
3H⁺ + PO³⁻₄ + Na⁺ + OH⁻ → Na⁺ + 2H⁺ + PO³⁻₄ + H₂O
3H⁺ + OH⁻ → 2H⁺ + H₂O
4) NaH₂PO₄ + NaOH → Na₂HPO₄ + H₂O
Na⁺ + 2H⁺ + PO³⁻₄ + Na⁺ + OH⁻→ 2Na⁺ + H⁺ + PO³⁻₄ + H₂O
2H⁺ + OH⁻→ H⁺ + H₂O
5) Na₂HPO₄ + NaOH → Na₃PO₄ + H₂O
2Na⁺ + H⁺ + PO³⁻₄ + Na⁺ + OH⁻ = 3Na ⁺ + PO³⁻₄ + H₂O
H⁺ + OH⁻ = H₂O