For a chemical reaction A \(\to\) B, it was found that concentration of B is increased by 0.2 mol L-1 in 30 min. The average rate of the reaction is ____________ \(\times 10^{-1}\) mol L-1 h-1. (in nearest integer)
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Correct Answer: 4
Solution and Explanation
Average rate = \(\frac{\Delta[B]}{\Delta t} = \frac{0.2}{0.5} = 0.4\) mol L-1 h-1 \(= 4 \times 10^{-1}\) mol L-1 h-1.
Answer: 4
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