Verified Solution • 2025–26 Session moderate

QNEET-2020-Ch-681: NEET 2020 Chemistry - Class 12 NEET-2020-Ch-681 Solution: The rate constant for a first order reaction is \(4.606…

The rate constant for a first order reaction is 4.606×10−3 s−14.606 \times 10^{-3}\ \text{s}^{-1}. The time required to reduce 2.0 g of the reactant to 0.2 g is: 200 s 500 s 1000 s 100 s

Multiple Choice Options

  • A 200 s
  • B 500 s
  • C 1000 s
  • D 100 s

Step-by-Step Verified Solution

k = ( 2.303 t ) log ( A 0 A ) for first order reaction 4.606 _ 10 _ 3 = ( 2.303 t ) log ( 2 0.2 ) _ t = 500 s

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