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QJEEM20Cha1a7: JEE Main 2020 Chemistry - Class 12 JEEM20Cha1a7 Solution: Consider the reaction sequence given below: Which of the…

Consider the reaction sequence given below: JEE Main 2020 (Online) 2nd September Evening Slot Chemistry - Haloalkanes and Haloarenes Question 109 English
Which of the following statements is true?

Multiple Choice Options

  • A Changing the concentration of base will have no effect on reaction (1)
  • B Changing the concentration of base will have no effect on reaction (2)
  • C Changing the base from OH- to -OR will have no effect on reaction (2)
  • D Doubling the concentration of base will double the rate of both the reactions

Step-by-Step Verified Solution

For reaction 1,
rate = K [t-BuBr] ....(1)

for reaction 2,
rate = K[t-BuBr][OH–] ...(2)

Reaction 1 is independent of concentration of OH– where as reaction 2 is dependent on concentration of OH–

Hence changing the concentration of base will have no effect on reaction 1.

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