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Chemical Kinetics and Nuclear Chemistry question

2010 · Shift 0 · Q19
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Chemical Kinetics and Nuclear Chemistry question

2010 · Shift 0 · Q19

JEE MainChemistryChemical Kinetics and Nuclear ChemistryMCQ+4 / −1
Consider the reaction : Cl2Cl_2Cl2​(aq) + H2SH_2SH2​S(aq) → SSS(s) + 2H+H^+H+ (aq) + 2Cl−Cl^-Cl− (aq) The rate equation for this reaction is rate = k [Cl2Cl_2Cl2​] [H2SH_2SH2​S] Which of these mechanisms is/are consistent with this rate equation? (A) Cl2Cl_2Cl2​ + H2SH_2SH2​S →\to→ H+H^+H+ + Cl−Cl^-Cl− + Cl+Cl^+Cl+ + HS−HS^-HS− (slow) Cl+Cl^+Cl+ + HS−HS^-HS−→\to→ H+H^+H+ + Cl−Cl^-Cl− + SSS (fast) (B) H2SH_2SH2​S ⇔\Leftrightarrow⇔ H+H^+H+ + HS−HS^-HS− (fast equilibrium) Cl2Cl_2Cl2​ + HS−HS^-HS−→\to→ 2Cl−Cl^-Cl− + H+H^+H+ + SSS (slow)
  1. A
    B only
  2. B
    Both A and B
  3. C
    Neither A nor B
  4. D
    A only
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