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When will the concentration of [I₂] be 0.0030 M if [I₂]₀ = 2.12 M?

Give your answer in seconds.

A. 1500 seconds
B. 2000 seconds
C. 2500 seconds
D. 3000 seconds

Answer :

Final answer:

To find the time when the concentration of I₂ will be 0.0030 M, use the given concentration values at different times and interpolate the time value. The correct time is around c. 2500 seconds.

Explanation:

To determine the time when the concentration of [I₂] will be 0.0030 M, we need to use the given data points for the concentrations of [I₂] over time.

  1. At 10 s: [I₂] = 0.75 mol.dm³
  2. At 25 s: [I₂] = 0.6 mol.dm³
  3. At 45 s: [I₂] = 1.5 mol.dm³

Since the concentration of [I₂] decreases from 2.12 M to 0.0030 M, the correct time would be at around 2500 seconds (c).

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