Chemical Kinetics and Nuclear ChemistryMedium
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 + H2 → H+ + Cl- + Cl+ + HS- (slow)
Cl+ + HS- → H+ + Cl- + S (fast)
(B) H2S → H+ + HS- (fast equilibrium)
Cl2 + HS- → 2Cl- + H+ + S (slow)
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 + H2 → H+ + Cl- + Cl+ + HS- (slow)
Cl+ + HS- → H+ + Cl- + S (fast)
(B) H2S → H+ + HS- (fast equilibrium)
Cl2 + HS- → 2Cl- + H+ + S (slow)
Options
A.B only
B.Both A and B
C.Neither A nor B
D.A only
Solution
Rate equation is to be derived wrt slow
Step ∴ from mechanism (A)
Rate = k [Cl2] [H2S]
Step ∴ from mechanism (A)
Rate = k [Cl2] [H2S]
Create a free account to view solution
View Solution FreeTopic: Chemical Kinetics and Nuclear Chemistry·Practice all Chemical Kinetics and Nuclear Chemistry questions
More Chemical Kinetics and Nuclear Chemistry Questions
Which of the following is pseudo first-order reaction?...Following are the values of Ea and DH for three reactions carried out at the same temperature : I : Ea = 20 kJ mol-1, &#...For hypothetical reaction A → B takes place according to$$A\overset{\quad K_{1}\quad}{\leftleftarrows}C\left( \text{fast...t1/2 of a reaction: A → Products $\left( \text{Order = }\frac{3}{2} \right)$ is represented by $t_{1/2}\alpha\frac{1}{\l...A radioactive substance does not emit:...