Question
The iodine clock reaction involves the following sequence of reactions occurring in a reaction mixture in a single beaker. 1.IO 3 ( aq ) +
The iodine "clock reaction" involves the following sequence of reactions occurring in a reaction mixture in a single beaker.
1.IO3( aq) + 5I (aq) + 6H+( aq) 3I2( aq) + 3H2O( l)
2.I2( aq) + 2S2O32( aq) 2I( aq) + S4O62 aq)
The molecular iodine (I2) formed in reaction 1 is immediately used up in reaction 2, so that no iodine accumulates. What is the overall reaction occurring in this experiment?
A) IO3(aq) + 3I(aq) + 2S2O32aq) + 6H+(aq) 2I2(aq) + S4O62(aq) + 3H2O(l)
B) IO3(aq) + 4S2O32(aq) + 6H+(aq) I(aq) + 2S4O62(aq) + 3H2O(l)
C) IO3aq) + 6S2O32aq) + 6H+(aq) I(aq) + 3S4O62aq) + 3H2O(l)
D) IO3(aq) + I2(aq) + 8S2O32(aq) + 6H+(aq) 3I(aq) + 4S4O62(aq) + 3H2O(l)
E) IO3(aq) + 2I2(aq) + 6S2O32(aq) + 6H+(aq) 5I(aq) + 3S4O62(aq) + 3H2O(l)
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