Fundamentholfundamenthol
JEE Main2019Chemistry
Q.

Among the following reactions of hydrogen with halogens, the one that requires a catalyst is :

  1. A

    H2 + Cl2 2HCl 

  2. B

    H2 + I2 2HI 

  3. C

    H2 + Br2 2HBr 

  4. D

    H2 + F2 2HF 

Solution

Reaction of I2with H2 requires catalyst.

While all other halogens reacts with H2 without catalyst.

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