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23/01/2022 3:29 pm
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In a reaction, 2A → Products, the concentration of A decreases from 0.5 mol L-1 to 0.4 mol L-1 in 10 minutes. Calculate the rate during this interval?
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23/01/2022 3:33 pm
Average rate = -\(\frac{1}{2}\)\(\frac{\Delta [A]}{\Delta t}\)
= -\(\frac{1}{2}\) \(\frac{[A]_2 - [A]_1}{t_2 - t_1}\)
= -\(\frac{1}{2}\)\(\frac{0.4 - 0.5}{10}\)
= -\(\frac{1}{2}\)\(\frac{-0.1}{10}\)
= 0.005 mol L-1 min-1
= 5 × 10-3 M min-1