5Br-(aq) + BrO3-(aq) + 6H+(aq) --> 3Br2(l) + 3H2O(l) The above reaction is expec

Question

5Br-(aq) + BrO3-(aq) + 6H+(aq) --> 3Br2(l) + 3H2O(l)

The above reaction is expected to obey the mechanism:

For each of the given rate expressions

1. -d[BrO3-]/dt

2. -d[H+]/dt

3. -d[Br-]/dt

choose the correct expression for the rate constant from the list below:

5Br-(aq) + BrO3-(aq) + 6H+(aq) --> 3Br2(l) + 3H2O(l) The above reaction is expected to obey the mechanism: BrO3-(aq) + H+(aq) = HBrO3(aq) Fast equilibrium HBrO3(aq) + H+(aq) = H2BrO3+(aq) Fast equilibrium H2BrO3+(aq) + Br-(aq) --> (Br-BrO2)(aq) + H2O(l) Slow (Br-BrO2)(aq) + 4H+(aq) + 4Br-(aq) --> products Fast For each of the given rate expressions 1. -d[BrO3-]/dt 2. -d[H+]/dt 3. -d[Br-]/dt choose the correct expression for the rate constant from the list below: A. k = 6k(3) B. k = k(1)k(2)k(3)/k(-1)k(-2) C. k = 5(k(1)-k(-1))(k(2)-k(-2))k(3) D. k = k(1)k(2)k(3)-k(-1)k(-2) E. k = 5(k(1)k(2)k(3)/k(-1)k(-2)) F. none of the above

Explanation / Answer

The slowest mechanism will be the bottleneck for the process.
BrO3-(aq) + H+(aq) = HBrO3(aq)
HBrO3(aq) + H+(aq) = H2BrO3+(aq)
H2BrO3+(aq) + Br-(aq) --> (Br-BrO2)(aq) + H2O(l)
----- ----- ----- ----- ----- ----- ----- ----- ----- ----- ----- ----- -----
Br-(aq) + BrO3-(aq) + 2H+ --> (Br-BrO2)(aq) + H2O(l) [1]

rxn rate = k[Br-][BrO3-][H+]

Related Questions

Navigate

• Browse (All)
• Browse 5
• Subjects

---

---

Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.