Mechanism: Fast: 2H2O (l) --> 2H+ (aq) + 2OH^- (aq) Very Fast: IOCl^2- (aq) + H^
ID: 942794 • Letter: M
Question
Mechanism: Fast: 2H2O (l) --> 2H+ (aq) + 2OH^- (aq) Very Fast: IOCl^2- (aq) + H^+ (aq) --> HCl (aq) + IO^- (aq) Slow: OH^- + OCl^-(aq) + I^- (aq) --> IOCl^2- (aq) Very fast: 2OH^- (aq) + 2HCl (aq) --> 2H2) (l) + 2 Cl^- (aq) Fast: Cl^- (aq) + H^+ (aq) --> HCl (aq) Identify the intermedietes if any Is this mechanism valid? (show work to justify) What criteria was met? Not met? (In the mechanism; again, if any)
This reaction was also given: Reaction: I^- (aq) + OCl^- (aq) --> IO^- (aq) + Cl^- (aq)
Explanation / Answer
Fast: 2H2O (l) --> 2H+ (aq) + 2OH^- (aq)
Very Fast: IOCl^2- (aq) + H^+ (aq) --> HCl (aq) + IO^- (aq)
Slow: OH^- + OCl^-(aq) + I^- (aq) --> IOCl^2- (aq)
Very fast: 2OH^- (aq) + 2HCl (aq) --> 2H2) (l) + 2 Cl^- (aq)
Fast: Cl^- (aq) + H^+ (aq) --> HCl (aq)
I^- (aq) + OCl^- (aq) --> IO^- (aq) + Cl^- (aq) overall reaction
intermediates H+ , OH- ,H2O,HCl, IOCl2-
Rate of reaction depends upon the slowest step
Rate law
rate = K [OH-][OCl-][I-]