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QJEEM19Chcf0b: JEE Main 2019 Chemistry - Class 11 JEEM19Chcf0b Solution: Which of the following potential energy (PE) diagrams…

Which of the following potential energy (PE) diagrams represents the SN1 reaction?

Multiple Choice Options

  • A https://ik.imagekit.io/novatra/photos/6ad7dcdaf0348bc3159e573395e0b4119a734212e5dc01582f24c3e85ae94e4b.webp
  • B https://ik.imagekit.io/novatra/photos/3165207ca9be617cf52cea35fb770fbdf1a5585d3a6f28d769da7ccbd33a8a26.webp
  • C https://ik.imagekit.io/novatra/photos/44f5bd9c65c306751dd63c063dd82dc0e972b53895f9cf74d8caedb062d6ba18.webp
  • D https://ik.imagekit.io/novatra/photos/ca67e1764677c566733b3250170c41d04cd2a0ca5703e22aa4adbdd58b4f3489.webp

Step-by-Step Verified Solution

SN1 reaction happens in two steps :

1st step : Formation of carbocation intermediate when leaving group leaves.

2nd step : The nucleophile attacks the carbocation, forming the product.

In SN1 reaction, formation of carbocation (1st step) is called rate determining step (RDS). RDS is the most difficult and slowest step. That is why potential energy required to complete first step is more compare to the second step.

So option A should be the right option.

JEE Main 2019 (Online) 9th April Evening Slot Chemistry - Hydrocarbons Question 107 English Explanation

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