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How does MoO4 serve as a catalyst in the iodine clock reaction
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Topic: How does MoO4 serve as a catalyst in the iodine clock reaction (Read 881 times)
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ferretman25
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Posts: 4
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How does MoO4 serve as a catalyst in the iodine clock reaction
«
on:
October 09, 2019, 12:39:20 PM »
The iodine clock reaction involves 2 equations:
1. H
2
O
2
(aq) + 2I
-
(aq)+ 2H
+
(aq) → 2H
2
O(l) + I
2
(aq)
2. I
2
(aq) + 2S
2
O
3
2-
(aq) → 2I
-
(aq) + S
4
O
6
2-
(aq)
Adding a solution of MoO
4
catalyses the first reaction by providing an alternative pathway with a lower activation energy - 43 kJ/mol as compared to 52 kJ/mol in the uncatalysed reaction - as according to this source (
https://pubs.acs.org/doi/abs/10.1021/ed075p87
). What specifically is this 'alternative pathway' and in full detail, how does the MoO
4
speed up the reaction rate of the first reaction?
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Borek
Mr. pH
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Re: How does MoO4 serve as a catalyst in the iodine clock reaction
«
Reply #1 on:
October 09, 2019, 01:27:16 PM »
Please don't cross post, asking once is perfectly enough.
Locked here.
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ChemBuddy
chemical calculators - stoichiometry, pH, concentration, buffer preparation,
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How does MoO4 serve as a catalyst in the iodine clock reaction