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O 2 + 2H 2 → 2H 2 O

Disorder created in surroundings. Disorder created in system. O 2 + 2H 2 → 2H 2 O. Ba(OH) 2 (s) + 2NH 4 Cl (s) → 2H 2 O + 2NH 3 (g) + Ba 2+ ( aq ) + 2Cl – ( aq ). 2K (s) + 2H 2 O → 2K + ( aq ) + 2OH – ( aq ) + H 2 (g). Disorder created in surroundings.

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O 2 + 2H 2 → 2H 2 O

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  1. Disorder created in surroundings Disorder created in system O2 + 2H2 → 2H2O Ba(OH)2 (s) + 2NH4Cl (s) → 2H2O + 2NH3 (g) + Ba2+ (aq) + 2Cl– (aq) 2K (s) + 2H2O → 2K+ (aq) + 2OH–(aq) + H2 (g)

  2. Disorder created in surroundings Disorder created in system O2 + 2H2 → 2H2O irreversible Ba(OH)2 (s) + 2NH4Cl (s) → 2H2O + 2NH3 (g) + Ba2+ (aq) + 2Cl– (aq) irreversible 2K (s) + 2H2O → 2K+ (aq) + 2OH–(aq) + H2 (g) irreversible

  3. Disorder created in surroundings Disorder created in system O2 + 2H2 → 2H2O irreversible Ba(OH)2 (s) + 2NH4Cl (s) → 2H2O + 2NH3 (g) + Ba2+ (aq) + 2Cl– (aq) irreversible 2K (s) + 2H2O → 2K+ (aq) + 2OH–(aq) + H2 (g) irreversible 2K+ (aq) + 2OH–(aq) + H2 (g) → 2K (s) + 2H2O

  4. Disorder created in surroundings Disorder created in system O2 + 2H2 → 2H2O irreversible Ba(OH)2 (s) + 2NH4Cl (s) → 2H2O + 2NH3 (g) + Ba2+ (aq) + 2Cl– (aq) irreversible 2K (s) + 2H2O → 2K+ (aq) + 2OH–(aq) + H2 (g) irreversible 2K+ (aq) + 2OH–(aq) + H2 (g) → 2K (s) + 2H2O impossible

  5. Disorder created in surroundings Disorder created in system O2 + 2H2 → 2H2O irreversible Ba(OH)2 (s) + 2NH4Cl (s) → 2H2O + 2NH3 (g) + Ba2+ (aq) + 2Cl– (aq) irreversible 2K (s) + 2H2O → 2K+ (aq) + 2OH–(aq) + H2 (g) irreversible 2K+ (aq) + 2OH–(aq) + H2 (g) → 2K (s) + 2H2O impossible N2 + 3H2 → 2NH3

  6. Disorder created in surroundings Disorder created in system O2 + 2H2 → 2H2O irreversible Ba(OH)2 (s) + 2NH4Cl (s) → 2H2O + 2NH3 (g) + Ba2+ (aq) + 2Cl– (aq) irreversible 2K (s) + 2H2O → 2K+ (aq) + 2OH–(aq) + H2 (g) irreversible 2K+ (aq) + 2OH–(aq) + H2 (g) → 2K (s) + 2H2O impossible N2 + 3H2 → 2NH3

  7. Disorder created in surroundings Disorder created in system O2 + 2H2 → 2H2O irreversible Ba(OH)2 (s) + 2NH4Cl (s) → 2H2O + 2NH3 (g) + Ba2+ (aq) + 2Cl– (aq) irreversible 2K (s) + 2H2O → 2K+ (aq) + 2OH–(aq) + H2 (g) irreversible 2K+ (aq) + 2OH–(aq) + H2 (g) → 2K (s) + 2H2O impossible N2 + 3H2 → 2NH3 forward N2 + 3H2 ← 2NH3 backward

  8. Disorder created in surroundings Disorder created in system O2 + 2H2 → 2H2O irreversible Ba(OH)2 (s) + 2NH4Cl (s) → 2H2O + 2NH3 (g) + Ba2+ (aq) + 2Cl– (aq) irreversible 2K (s) + 2H2O → 2K+ (aq) + 2OH–(aq) + H2 (g) irreversible 2K+ (aq) + 2OH–(aq) + H2 (g) → 2K (s) + 2H2O impossible N2 + 3H2 → 2NH3 forward The reaction occursreversibly. N2 + 3H2 ← 2NH3 backward

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