Ncert Exercises & Solutions

4.2: 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?

= - \frac{1}{2} \frac{∆ [A]}{∆ t}

= \frac{1}{2} \frac{- 0.1}{10}

= 0.005 m o l L^{- 1} m i n^{- 1}

= 5 \times 10^{- 3 M m i n^{- 1}}

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