Verified Solution • 2025–26 Session moderate

QNEET-2016-Ch-1034: NEET 2016 Chemistry - Class 12 NEET-2016-Ch-1034 Solution: The rate of first-order reaction is \(0.04\ {mol L}^{-1}\…

The rate of first-order reaction is 0.04 mol L−1 s−10.04\ \text{mol L}^{-1}\ \text{s}^{-1} at 10 seconds and 0.03 mol L−1 s−10.03\ \text{mol L}^{-1}\ \text{s}^{-1} at 20 seconds after initiation of the reaction. The half-life period of the reaction is 44.1 s 54.1 s 24.1 s 34.1 s

Multiple Choice Options

  • A 44.1 s
  • B 54.1 s
  • C 24.1 s
  • D 34.1 s

Step-by-Step Verified Solution

For the first order reaction A _ Product Rate _ [A] k = 2.303 t 2 _ t 1 log _ ( r a t e ) 1 ( r a t e ) 2 = 2.303 20 _ 10 log _ 0.04 0.03 = 0.0287 sec -1 t 1 2 = 0.693 k = 0.693 0.0287 = 24.14 sec

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