- Adecrease in entropy
- Bdecrease in enthalpy
- C$T\Delta S$ for the process is negative
- ✓$(A)$, $(B)$ and $(C)$ are correct
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Assertion $A$: Permanganate titrations are not performed in presence of hydrochloric acid.
Reason $R$ : Chlorine is formed as a consequence of oxidation of hydrochloric acid.
In the light of the above statements, choose the correct answer from the options given below.
$Cl_2(aq)+H_2SO_4(aq) \rightarrow S(s)+2H^+(aq)+2Cl^-$
The rate equation for this reaction is
rate $=k[Cl_2][H_2S]$
Which of these mechanisms is/are consistent with this rate equation ?
$A.\,\, Cl_2 + H_2S \rightarrow H^+ + Cl^- + Cl^+ + HS^-\,\, (slow)$
$Cl^+ +HS^- \rightarrow H^+ +Cl^- +S \,(fast)$
$B.\,\, H_2S \rightleftharpoons H^+ + HS^-\,$ (fast equilibrium)
$Cl_2^+ + HS^- \rightarrow 2CI^- + H^+ + S\,\, (Slow)$