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Chemistry Drawing Questions ...
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Chemistry Drawing Questions
Below are the reactions performed: H2O2(aq) + 2I-(aq) + 2H3O+(aq) → I2(aq) + 4H2O(l) (1) I2(aq) + 2S2O32-(aq) → S4O62-(aq) + 2I-(aq) (2) I2(aq) + I-(aq) + Starch(aq) → (I3- -Starch)complex (aq) (3) |
During your practical today you determined the rate law for Reaction (1). What is the purpose of reactions (2) and (3)? With respect to hypothetical scenarios #1 and #2, discuss what you would observe at the macro and sub-micro level.
Scenario #1: No thiosulfate (S2O32-) is added to the flask
Scenario #2: Neither thiosulfate nor starch is added to the flask