calculate-the-average-rate-of-appearance-of-so2-across-the-following-time-interv

Question

Calculate the average rate of appearance of SO₂ across the following time intervals all centered on t = 175 min. Identify the best estimate for the instantaneous rate of appearance of SO₂ at t = 175 min and explain why.
(i) 50 to 300 min
(ii) 150 to 200 min
(iii) 100 to 250 min
(iv) 0 to 350 min

Table showing time intervals and concentrations of SO2, SO2Cl2, and Cl2 for chemical kinetics.

(i) 50 to 300 min

(ii) 150 to 200 min

(iii) 100 to 250 min

(iv) 0 to 350 min

Accepted Answer

(i) 5.2×10^–5 M/min
(ii) 5.2×10^–5 M/min
(iii) 5.3×10^–5 M/min
(iv) 5.3×10^–5 M/min
Rate (ii) is the best estimate because it is measured in the closest range of time.

Answer

(i) 5.2×10^–5 M/min
(ii) 5.2×10^–5 M/min
(iii) 5.3×10^–5 M/min
(iv) 5.3×10^–5 M/min
Rate (iv) is the best estimate because it is measured in the largest range of time.

Answer

(i) 5.4×10^–5 M/min
(ii) 5.2×10^–5 M/min
(iii) 5.6×10^–5 M/min
(iv) 5.2×10^–5 M/min
Rate (ii) is the best estimate because it is measured in the closest range of time.

Answer

(i) 5.4×10^–5 M/min
(ii) 5.2×10^–5 M/min
(iii) 5.6×10^–5 M/min
(iv) 5.2×10^–5 M/min
Rate (iv) is the best estimate because it is measured in the largest range of time.

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