law of mass action, 3 (GW-12) Given are the following reactions. Equal These If necessary from and to define for each (Balanced) reaction This law of mass action. Notes 1: Forget about it. The Units not and short in so far as How possible Notes 2: Use for This Balancing whole Figures, No Brof a kind used H2 + O2 ⇄ H2O Br2 + H2 ⇄ HBr N2 + H2 ⇄ NH3 N2O5 ⇄ NO2 + O2 A + 2 B ⇄ 3 C + 4 D (Yes, I did. Balanced!) H2O2 ⇄ H2O + O2 CH4 + O2 ⇄ CO2 + H2O Fe + O2 ⇄ Fe2O3 N2 + H2 ⇄ NH3 HCl + NaOH ⇄ NaCl + H2O CaCO3 ⇄ CaO + CO2 KClO3 ⇄ KCl + O2 Zn + HCl ⇄ ZnCl2 + H2 AgNO3 + NaCl ⇄ AgCl + NaNO3

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October 1, 2026 at 10:12 am #9296
Aufgabe: GW-12
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Given are the following reactions. Equal These If necessary from and to define for each (Balanced) reaction This law of mass action.
Notes 1: Forget about it. The Units not and short in so far as How possible
Notes 2: Use for This Balancing whole Figures, No Brof a kind used
1. H₂ + O₂ ⇄ H₂O
2. Br₂ + H₂ ⇄ HBr
3. N₂ + H₂ ⇄ NH₃
4. N₂O₅ ⇄ NO₂ + O₂
5. A + 2 B ⇄ 3 C + 4 D (Yes, I did. Balanced!)
6. H₂O₂ ⇄ H₂O + O₂
7. CH₄ + O₂ ⇄ CO₂ + H₂O
8. Fe + O₂ ⇄ Fe₂O₃
9. N₂ + H₂ ⇄ NH₃
10. HCl + NaOH ⇄ NaCl + H₂O
11. CaCO₃ ⇄ CaO + CO₂
12. KClO₃ ⇄ KCl + O₂
13. Zn + HCl ⇄ ZnCl₂ + H₂
14. AgNO₃ + NaCl ⇄ AgCl + NaNO₃
Aufgabe: GW-12
ⓘ 🔄 Reload 🖨️ print ◀ – ▶ ?! Question/Answer ?!
Given are the following reactions. Equal These If necessary from and to define for each (Balanced) reaction This law of mass action.
Notes 1: Forget about it. The Units not and short in so far as How possible
Notes 2: Use for This Balancing whole Figures, No Brof a kind used
1. H₂ + O₂ ⇄ H₂O
2. Br₂ + H₂ ⇄ HBr
3. N₂ + H₂ ⇄ NH₃
4. N₂O₅ ⇄ NO₂ + O₂
5. A + 2 B ⇄ 3 C + 4 D (Yes, I did. Balanced!)
6. H₂O₂ ⇄ H₂O + O₂
7. CH₄ + O₂ ⇄ CO₂ + H₂O
8. Fe + O₂ ⇄ Fe₂O₃
9. N₂ + H₂ ⇄ NH₃
10. HCl + NaOH ⇄ NaCl + H₂O
11. CaCO₃ ⇄ CaO + CO₂
12. KClO₃ ⇄ KCl + O₂
13. Zn + HCl ⇄ ZnCl₂ + H₂
14. AgNO₃ + NaCl ⇄ AgCl + NaNO₃
October 1, 2026 at 10:12 am #9297
Lösung:
1. 2·H₂ + O₂ ⇄ 2·H₂O
  K = c²(H₂O)/(c²(H₂)·c(O₂))
  Unity: (mol/l)^2/((mol/l²)·(mol/l)) = 1/(mol/l) = l/mol
2. Br₂ + H₂ ⇄ 2·HBr
     K = c²(HBr)/(c(Br₂)·c(H₂))
     Unity: (mol/l)^2/(mol/l · mol/l)
     Units shorter The Commission Get out of here.
3. 1·N₂ + 3·H₂ ⇄ 2·NH₃
  K = c²(NH₃)/(c(N₂)·c³(H₂))
  Units: (mol/l)^2/(mol/l)^4 = (l/mol)²
4. 2·N₂O₅ → 4·NO₂ + 1·O₂
  K = c⁴(NO₂)·c(O₂)/c²(N₂O₅)
  Units: (mol/l)²
5. A + 2 B ⇄ 3 C + 4 D (Yes, I did. Balanced!)
  K = c³(C)·c⁴(D)/(c(A)·c²(B))
  Units: (mol/l)⁴
6. 2·H₂O₂ ⇄ 2·H₂O(l) + O₂
  K = (c²(H₂O)·c(O₂))/c²(H₂O₂)
  Units: (mol/l)^3/(mol/l)^2 = (mol/l)
7. CH₄ + 2·O₂ ⇄ CO₂ + 2·H₂O(l)
  K = (c(CO₂)·c²(H₂O))/(c(CH₄)·c²(O₂))
  Units: (mol/l)^3/(mol/l)^3 = 1
8. 4·Fe(s) + 3·O₂ ⇄ 2·Fe₂O₃(s)
  K = c²(Fe₂O₃)/(c⁴(Fe)·c³(O₂))
  Units: (mol/l)^2/(mol/l)^7 = (mol/l)^(-5) = (l/mol)⁵
9. N₂ + 3·H₂ ⇄ 2·NH₃
  K = c²(NH₃)/(c(N₂)·c³(H₂))
  Units: (mol/l)^2/(mol/l)^4 = (mol/l)^(-2) = (l/mol)²
10. HCl + NaOH ⇄ NaCl + H₂O(l)
  K = (c(NaCl)·c(H₂O))/(c(HCl)·c(NaOH))
  Units: (mol/l)^2/(mol/l)^2 = 1
11. CaCO₃(s) ⇄ CaO(s) + CO₂
  K = (c(CaO)·c(CO₂))/c(CaCO₃)
  Units: (mol/l)^2/(mol/l) = (mol/l)
12. 2·KClO₃(s) ⇄ 2·KCl(s) + 3·O₂
  K = (c²(KCl)·c³(O₂))/c²(KClO₃)
  Units: (mol/l)^5/(mol/l)^2 = (mol/l)³
13. Zn(s) + 2·HCl ⇄ ZnCl₂ + H₂
  K = (c(ZnCl₂)·c(H₂))/(c(Zn)·c²(HCl))
  Units: (mol/l)^2/(mol/l)^3 = (mol/l)^(-1) = (l/mol)
14. AgNO₃ + NaCl ⇄ AgCl(s) + NaNO₃
     K = (c(AgCl)·c(NaNO₃))/(c(AgNO₃)·c(NaCl))
     Units: (mol/l)^2/(mol/l)^2 = 1
     Units shorter The Commission Get out of here.
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