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Organic conversion

Benzene to cyclohexane

1 step: addition

Class 11, Chapter 9 Hydrocarbons

  1. BenzeneC₆H₆Arene
  2. Step 1

    H₂, Ni

    heat, pressure

    i

    Benzene adds three moles of H₂ only under forcing conditions; it does not decolourise Br₂ water.

    CyclohexaneC₆H₁₂Alkane

Exam answer

  1. Step 1: Benzene to cyclohexane: H₂, Ni, heat, pressure.
Why these reagents

Reagent and reason, step by step

  • Step 1: Benzene to cyclohexane: H₂, Ni, heat, pressure Benzene adds three moles of H₂ only under forcing conditions; it does not decolourise Br₂ water.
Good to know

Points to note

  • Step 1Benzene adds three moles of H₂ only under forcing conditions; it does not decolourise Br₂ water.
Questions

Benzene to cyclohexane: quick answers

How many steps does it take to convert benzene to cyclohexane?

1 step: Benzene, then cyclohexane.

Which named reaction is used to convert benzene to cyclohexane?

None of the steps has a name. They are addition, so write the reagent and the condition for each step.

What is the reagent for step 1 of benzene to cyclohexane?

Benzene to cyclohexane: H₂, Ni, heat, pressure. Benzene adds three moles of H₂ only under forcing conditions; it does not decolourise Br₂ water.

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