CH-1677
Concentration and pressure
Chemistry · Secondary 4 · Medium · Concentration and pressure
In an iodine clock experiment, a student doubles the concentration of aqueous potassium iodide while keeping temperature and all other conditions the same.
How will this change affect the time taken for the blue-black colour to appear?
How will this change affect the time taken for the blue-black colour to appear?
- It decreases because the reaction is faster.
- It increases because the reaction is slower.
- It stays the same because concentration does not affect rate.
- It first increases then decreases.
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