The time required for 100% completion of a zero order reaction is
$\dfrac{a}{2k}$
ak
$\dfrac{2k}{a}$
$\dfrac{a}{k}$
Next Question
Consider the reaction,Cl2 (aq) + H2S (aq) → S(s) + 2H+(aq) + 2Cl–(aq)
The rate equation for this reaction is, rate = k [Cl2] [H2S].
Which of these mechanisms is/are consistent with this rate equation?
(a) Cl2 + H2S → H+ + Cl– + Cl+ + HS– (slow)
Cl+ + HS– → H+ + Cl– + S (fast)
(b) H2S ⇌ H+ + HS– (fast equilibrium)
Cl2 + HS– → 2Cl– + H+ + S (slow)